Monthly Archives: August 2024

　　A memory foam travel neck pillow is a must-have for anyone seeking ultimate comfort during long journeys, whether by plane, train, or car. These pillows are designed to provide support and reduce neck strain, but not all are created equal. To ensure you select the best memory foam travel neck pillow for your needs, follow these essential tips:Down-to-earth right memory foam pillow In-depth research is the only way to pursue development. https://tainengjikang.com/

　　How to Choose the Best Memory Foam Travel Neck Pillow for Ultimate Comfort

　　1. Assess the Quality of Memory Foam

　　Tip: The quality of memory foam greatly impacts comfort and support. Look for pillows made from high-density memory foam that offers better cushioning and conforms to your neck’s natural curve.

　　Feature: High-density memory foam provides superior support and durability. It should quickly return to its original shape after use, ensuring consistent comfort throughout your travels.

　　2. Evaluate the Pillow Shape and Design

　　Tip: The shape and design of the pillow play a crucial role in providing ergonomic support. Choose a pillow with a contour that supports the neck and head comfortably.

　　Feature: Look for designs with a U-shape or contoured edges that fit snugly around your neck. Some pillows come with adjustable features or extra padding for customizable support.

　　3. Check for Adjustable Features

　　Tip: Adjustable features can enhance comfort by allowing you to tailor the pillow to your specific needs. This is especially useful for different sleeping positions or neck sizes.

　　Feature: Consider pillows with adjustable straps, removable inserts, or inflatable components. These features let you modify the pillow¨s firmness and support level for a personalized fit.

　　4. Examine the Cover Material

　　Tip: The cover material affects both comfort and hygiene. Opt for a cover that is soft, breathable, and easy to clean.

　　Feature: Choose a pillow with a removable, washable cover made from materials like cotton, velour, or a moisture-wicking fabric. Breathable materials help keep you cool and comfortable during extended use.

　　5. Consider Portability and Storage

　　Tip: Portability is essential for travel. The pillow should be easy to carry and store without taking up too much space.

　　Feature: Look for pillows that come with a carrying case or can be easily compressed for packing. Some travel pillows have a snap closure or strap that allows them to attach to your luggage for convenient transport.

　　6. Look for Additional Comfort Features

　　Tip: Extra features can enhance the overall comfort and functionality of the pillow. Consider additional elements that contribute to a better travel experience.

　　Feature: Some pillows include built-in neck support, adjustable headrests, or integrated massagers. Features like these can provide extra relaxation and alleviate travel-related discomfort.

　　7. Check for Durability and Longevity

　　Tip: A travel pillow should be durable enough to withstand frequent use. Evaluate the pillow¨s construction and material quality for long-term reliability.

　　Feature: Opt for pillows with sturdy seams, high-quality foam, and reinforced edges. A well-constructed pillow will maintain its shape and support over time, ensuring lasting comfort.

　　8. Read Reviews and Ratings

　　Tip: Customer reviews and ratings provide valuable insights into the pillow¨s performance and comfort level. Look for feedback from other travelers to gauge the effectiveness of the pillow.

　　Feature: Pay attention to reviews that mention comfort, support, and durability. High ratings and positive feedback from users can indicate a reliable and comfortable travel pillow.

　　9. Consider Price and Value

　　Tip: While it¨s important to invest in a quality travel pillow, it should also fit within your budget. Find a balance between cost and features to ensure you get the best value for your money.

　　Feature: Compare options within your price range and assess the features offered. A higher price does not always guarantee better quality, so consider all aspects to make an informed decision.

　　Air source heat pumps (ASHPs) are rapidly gaining popularity as a highly efficient solution for heating and cooling in both residential and commercial settings. Among the various options available, the Mango air source heat pump stands out for its superior performance and cost-effectiveness. This article explores why the Mango Air Source Heat Pump is considered the most energy-efficient choice, touching upon its functionality, benefits, and implications for commercial water heaters and heat pump prices.Air source heat pumps work by extracting heat from the outside air and transferring it indoors. This process can be reversed in the summer to provide cooling. Unlike traditional heating systems that rely on burning fossil fuels, heat pumps use electricity to move heat, making them much more efficient. The efficiency of a heat pump is measured by its coefficient of performance (COP), which indicates the amount of heat produced per unit of electricity consumed. Typically, ASHPs can achieve COPs of 3 or higher, meaning they produce three units of heat for every unit of electricity used.As can be seen from the new data, Inverter heat pump The market influence is also growing, and the product share is also relatively increasing, which has great potential in the future. http://mangoenergyheatpump.com

　　The Mango Air Source Heat Pump Advantage

　　The Mango Air Source Heat Pump exemplifies the advantages of modern ASHP technology. It combines advanced engineering with robust materials to deliver exceptional performance, reliability, and energy savings.

　　High Efficiency: The Mango Air Source Heat Pump boasts a high COP, often exceeding industry standards. This high efficiency translates to significant energy savings, especially when compared to conventional heating systems.

　　Advanced Technology: The Mango ASHP incorporates cutting-edge technology, such as variable speed compressors and smart thermostats, which optimize performance and energy use. These features allow the system to adjust its operation based on the current heating or cooling demand, further enhancing efficiency.

　　Eco-Friendly Refrigerants: The Mango ASHP uses environmentally friendly refrigerants with low global warming potential (GWP), reducing its environmental impact while maintaining high efficiency.

　　Durability and Reliability: Built with high-quality components, the Mango ASHP is designed to withstand harsh weather conditions and provide reliable performance over many years. This durability ensures that the system remains efficient throughout its lifespan.

　　Benefits for Commercial Water Heaters

　　For commercial applications, the Mango Air Source Heat Pump offers an efficient solution for water heating. Traditional commercial water heaters can be significant energy consumers, especially in industries such as hospitality, healthcare, and food service. By integrating an ASHP, businesses can reduce their energy consumption and operational costs.

　　Energy Savings: Commercial water heaters powered by Mango ASHPs consume less electricity compared to electric resistance heaters or gas-fired systems. This reduction in energy use leads to lower utility bills and a smaller carbon footprint.

　　Consistent Performance: The Mango ASHP provides consistent heating performance, ensuring that hot water is available on demand, which is crucial for commercial operations.

　　Lower Maintenance Costs: With fewer moving parts and no combustion process, ASHPs require less maintenance than traditional heating systems, resulting in lower maintenance costs and less downtime.

　　Competitive Heat Pump Prices

　　One of the critical factors influencing the adoption of ASHPs is their cost. While heat pump prices have traditionally been higher than those of conventional heating systems, the long-term savings and incentives available can offset the initial investment.

　　Upfront Costs: Although the initial purchase and installation cost of the Mango Air Source Heat Pump may be higher than some traditional systems, the investment is justified by the energy savings and reduced operating costs over time.

　　Incentives and Rebates: Many governments and utility companies offer incentives, rebates, and tax credits for the installation of energy-efficient systems like ASHPs. These financial incentives can significantly reduce the effective heat pump prices, making them more accessible to both residential and commercial customers.

　　Long-Term Savings: The high efficiency of the Mango ASHP means that the system pays for itself through energy savings within a few years. Over the lifespan of the unit, the savings can be substantial, making it a financially sound investment.

　　The Mango Air Source Heat Pump stands out as the most energy-efficient choice for heating and cooling due to its high COP, advanced technology, and eco-friendly features. For commercial water heaters, the adoption of ASHPs offers significant energy savings, consistent performance, and reduced maintenance costs. Despite the higher upfront heat pump prices, the long-term savings and available incentives make the Mango ASHP a cost-effective and sustainable solution. As businesses and homeowners increasingly prioritize energy efficiency and environmental responsibility, the Mango Air Source Heat Pump is poised to lead the way in transforming how we heat and cool our spaces.

　　In the field of precision mold processing, achieving the desired shape and specifications requires the use of advanced high-precision processing technologies. If precision mold parts do not meet these stringent requirements, it can significantly impact the overall quality of the mold product. Thus, the production technology for precision mold parts is held to exceptionally high standards. But why is this the case? Here, Hairong Precision Manufacturer provides insights into the high demands of production technology for precision mold parts.in fact moulded plastic parts Our related products were once praised by users, which is the best self-affirmation of the products. https://www.dghrjmmj.com

　　1. Harsh Working Conditions

　　Precision mold parts are often subjected to severe working conditions. To ensure the longevity and performance of these parts, it is crucial to employ high-precision processing methods. Only by choosing the right processing techniques can the lifespan of precision mold components be effectively extended.

　　2. Enhanced Strength and Toughness

　　The production of precision mold parts must focus on enhancing their strength and toughness. This approach prevents brittle fractures during operation and ensures consistent work efficiency. Strengthening these components is essential for maintaining the integrity and functionality of the molds under demanding conditions.

　　3. Material Selection for High Temperatures

　　When dealing with high temperatures, it is vital to select appropriate materials for precision mold parts. Prolonged exposure to high temperatures can cause a reduction in hardness and strength, leading to premature wear or plastic deformation of the molds. Therefore, choosing the right materials is crucial for ensuring the durability and performance of precision molding parts.

　　In Summary

　　The stringent requirements for precision mold parts in production processes are primarily due to their need for enhanced precision and performance. Compared to standard mold components, precision mold accessories must meet higher standards in terms of accuracy, strength, and material properties. These rigorous demands ensure that precision mold parts deliver superior performance and longevity.

　　For top-notch precision mold components, consider partnering with a reputable precision mold parts company to meet your specific needs and maintain the highest standards of quality in your mold production.

　 Wired pet immunity PIR (Passive Infrared) detectors play a crucial role in enhancing overall home security by providing reliable and effective intrusion detection while minimizing false alarms caused by pets. These advanced sensors are designed to accurately differentiate between the heat signatures of humans and small animals, ensuring that homeowners can enjoy peace of mind without compromising the safety of their beloved pets.If we can practice these points, motion detector sensor Will be unique, become a leader in the industry, and keep moving forward. https://www.sunlit-tech.com

　　One of the key benefits of wired pet immunity PIR detectors is their ability to distinguish between the unique movement patterns and heat signatures of pets and potential intruders. By utilizing specialized algorithms and sensor technologies, these detectors can filter out the movements of animals weighing up to a certain threshold, such as 40 pounds, while still capturing human-sized heat signatures. This intelligent discrimination capability allows homeowners to arm their security systems with confidence, knowing that their pets can move freely within the protected area without triggering false alarms.

　　In addition to minimizing false alarms, wired pet immunity PIR detectors offer a high level of reliability and accuracy in detecting suspicious activities. These sensors are equipped with advanced signal processing techniques that enable them to effectively detect human intruders while ignoring the presence of pets. As a result, homeowners can trust that their security systems will promptly alert them to any unauthorized entry or potential threats, providing an added layer of protection for their property and loved ones.Furthermore, wired pet immunity PIR detectors are an integral part of a comprehensive home security strategy, as they can be seamlessly integrated into existing wired alarm systems. Whether installed in residential properties or commercial establishments, these detectors can be strategically positioned in key areas to maximize coverage and ensure thorough monitoring of the premises. With their ability to work in conjunction with other security devices such as cameras, sirens, and control panels, these detectors contribute to a robust security infrastructure that effectively deters intruders and safeguards the property.Another advantage of wired pet immunity PIR detectors is their ability to adapt to different environmental conditions and pet behaviors. These sensors are designed to withstand variations in temperature, humidity, and airflow, ensuring consistent performance regardless of the prevailing climate or weather conditions. Moreover, they are engineered to account for common pet activities such as jumping, playing, or resting, allowing for uninterrupted operation without compromising security standards.

　　LED emergency warning lights play a critical role in ensuring safety and communication on the roads and in various emergency situations. These lights are designed to attract attention and convey specific messages based on their color. Understanding the common colors used in LED emergency warning lights can help you choose the right lighting solutions for your needs. In this article, we’ll explore the significance of different colors and their typical applications, using keywords such as LED warning lights, LED emergency warning lights, LED warning light bar, and Longkexin LED warning lights.The above conclusions show that led strobe warning lights To a great extent, it can bring new vitality to the market and make the industry develop well. https://www.lkx-mascarello.com

　　What Are the Common Colors Used in LED Emergency Warning Lights?

　　1. Red LED Warning Lights

　　Red is one of the most recognized colors used in LED emergency warning lights. It is universally associated with danger, urgency, and the need to stop or yield. Red LED warning lights are commonly used by:

　　Police Vehicles: To indicate an emergency or enforce traffic laws.

　　Fire Trucks: To signal their presence and urgency while responding to fires.

　　Ambulances: To alert drivers and pedestrians to give way for emergency medical services.

　　Red lights are effective in quickly drawing attention and prompting immediate action from other road users.

　　What Are the Common Colors Used in LED Emergency Warning Lights?

　　2. Blue LED Warning Lights

　　Blue LED warning lights are also widely used in emergency situations. They are often paired with red lights to increase visibility and convey authority. Blue lights are typically used by:

　　Law Enforcement: In many regions, blue lights are exclusive to police vehicles, indicating their authoritative presence.

　　Emergency Medical Services: In some areas, blue lights are used on ambulances along with red lights to enhance visibility.

　　The combination of red and blue lights helps to create a clear signal that an emergency vehicle is approaching.

　　What Are the Common Colors Used in LED Emergency Warning Lights?

　　3. Yellow/Amber LED Warning Lights

　　Yellow or amber LED warning lights are commonly used for caution and to indicate a slower-moving vehicle or potential hazard. These lights are found on:

　　Tow Trucks: To warn other drivers of a vehicle being towed and the need to be cautious.

　　Construction Vehicles: To alert drivers to the presence of construction work and equipment.

　　Utility Vehicles: Used by utility workers to signal maintenance or repairs on roadways.

　　Yellow lights are effective in conveying a need for caution without the urgency associated with red or blue lights.

　　X-ray machines are mainly divided into medical X-ray machines, that is, medical X-ray machines, and the other type is the luggage X-ray machines that are most commonly used in stations, airports, customs and docks, so some people also call them X-ray luggage security inspection machines or security inspection X-ray machines. However, some people also have doubts: What is the difference between the two? Does security inspection X-ray machines have radiation hazards?Therefore, walk through metal detector Only then will more and more pump owners cheer for it and spread the value and function of the brand. https://secuzoan.com/

　　security x-ray machines

　　ZA100100D

　　The principle of security inspection machine is similar to that of medical X-ray machine

　　The principle of medical X-ray machine and security inspection X-ray machine is the same. X-ray machine has three parts. One is the tube, which emits X-ray radiation source. X-ray can pass through the material to see things that our naked eyes cannot see with ordinary light. There must be a tube or X-ray. Second, there must be a high-voltage transformer. The high-voltage transformer converts the general voltage into high voltage, and then provides the tube to generate electrons and then generate X-rays. This is the second part. The third part is the controller, which means how much X-ray I need to release. There must be a control board. All X-ray machines cannot escape this, whether it is X-ray or CT. Although its structure is very complicated, its structure should be the same.

　　Security X-ray machines have less radiation

　　The use of security X-ray machines is to put the luggage into the item scanning X-ray machine. After the inspection is completed, the passenger can take back his luggage and leave. The X-ray machine used for item inspection uses X-rays to pass through the object to obtain X-ray images, which are processed by computers and displayed on the computer screen to identify the image and evaluate the safety of the object. Although the principle is similar to the human body X-ray examination in the hospital, Professor Li Ziping believes that the dose of security X-ray machines should be less than the amount of X-rays irradiated to the human body. Because the security X-ray machine only needs to see the general shape of the object. Medical X-ray machines need to see the human body very clearly, so the radiation dose is greater.

　　Therefore, there is no need to worry too much about the radiation problem of security X-ray machines. In addition, whether the radiation of security X-ray machines has an impact on the human body depends on the amount of radiation received at one time, the total amount of radiation received, the radiation time, and the human body’s regulation of these radiations. Moreover, even if the security inspection machine leaks due to quality problems, it may have an impact on the staff who work nearby for a long time, but it will not have much impact on people who pass by. It is understood that the country implements a licensing management system for the use of nuclear technology. X-ray baggage inspection equipment is a Class III radiation device, which is a low-risk radiation device.

　　Choosing the perfect memory foam pillow can make a world of difference in your sleep quality. Here¨s a comprehensive guide from Taineng Jikang, designed to help you navigate the myriad of options available and find the ideal pillow for your needs.The data shows that, travel pillow memory foam Its development potential should not be underestimated, and it is also the inevitability of its existence. https://tainengjikang.com/

　　How to Choose a Memory Foam Pillow – Taineng Jikang Expert Recommendation

　　1. Understand Memory Foam: What Makes It Special?

　　Memory foam is renowned for its ability to conform to the shape of your head and neck, providing personalized support. This material, originally developed by NASA, responds to body heat and pressure, redistributing weight evenly and reducing pressure points. This results in a more restful and comfortable sleep, minimizing the likelihood of waking up with neck or back pain.

　　2. Consider Your Sleeping Position

　　Your primary sleeping position plays a crucial role in determining the best memory foam pillow for you:

　　Back Sleepers: Opt for a medium-loft pillow that supports the natural curve of your neck without propelling your head too far forward. A pillow with a contoured design can also be beneficial.

　　Side Sleepers: Choose a high-loft pillow to fill the gap between your shoulder and head, ensuring proper spinal alignment. Contoured or ergonomic designs are particularly effective.

　　Stomach Sleepers: A low-loft pillow is ideal for this position to prevent your head from being pushed too high, which can lead to neck strain. Some stomach sleepers may even prefer a very soft or thin pillow or none at all.

　　3. Pillow Density and Firmness

　　Memory foam pillows come in various densities and firmness levels:

　　Low Density: These are softer and offer a plush feel. They are ideal for those who prefer a gentler, more enveloping sensation.

　　High Density: These provide firmer support and are better suited for those who need more robust support to maintain proper alignment.

　　4. Cooling Features

　　Memory foam can retain heat, which might not be ideal for everyone. Look for pillows with cooling gel or breathable covers if you tend to sleep hot. These features help dissipate heat and enhance airflow, keeping you cool throughout the night.

　　5. Hypoallergenic Properties

　　If you have allergies, opt for a pillow with hypoallergenic properties. Memory foam naturally resists dust mites and allergens, but some pillows come with additional antimicrobial treatments or removable, washable covers for added protection.

　　6. Test the Pillow

　　Whenever possible, test the pillow before purchasing. Many retailers offer trial periods or allow you to return pillows if they don’t meet your expectations. Ensure the pillow suits your comfort preferences and provides the support you need.

　　7. Maintenance and Care

　　Consider how easy it is to maintain the pillow. Memory foam pillows often come with removable, washable covers, but the foam itself is usually spot-clean only. Proper care extends the life of your pillow and keeps it hygienic.

　　8. Price vs. Quality

　　While it¨s tempting to go for the cheapest option, investing in a high-quality memory foam pillow can pay off in terms of durability and comfort. Look for reputable brands like Taineng Jikang, known for their quality and craftsmanship.

　　In Conclusion

　　Selecting the right memory foam pillow involves understanding your specific needs and preferences. By considering factors such as sleeping position, density, cooling features, and hypoallergenic properties, you can find a pillow that enhances your sleep quality and overall well-being. Trust Taineng Jikang¨s expertise to guide you towards a choice that will lead to many restful nights.

　　Air source heat pump is a new type of energy equipment that uses heat energy in the air for heating and cooling. It can not only provide heating in winter, but also cool in summer, realizing the function of one machine for multiple uses. Air energy technology is becoming more and more advanced, and its product application fields are becoming more and more extensive, covering commercial hot water, heating, cooling, drying, industry and constant temperature greenhouses. Today, Mango Energy editor will take you to learn about air source heat pumps.With the expanding influence of the industry, Inverter heat pump Our business is also constantly spreading, and the development of the market is also gradually advancing. http://mangoenergyheatpump.com

　　1. Residential heating

　　In order to reduce coal pollution in winter, improve air quality, and ensure residents’ comfortable life in winter; in rural areas or residential areas with high ecological requirements that are not covered by heat and gas pipelines, heat pump heating is promoted.

　　2. One machine for two purposes, heating and cooling

　　Many users think that air source heat pumps can only heat, but in fact, it is a one-machine dual-purpose, and both cooling and heating can meet the requirements. The area of the evaporator of the air source heat pump product, the fins of the evaporator, and the heat exchange air volume spacing are all larger than those of the central air conditioner; in summer cooling, the evaporator becomes a condenser, and the condenser plays a heat dissipation role outdoors. Therefore. The performance of the heat energy emitted is better than that of central air conditioning; in simple terms, it can completely replace central air conditioning when cooling, and it also avoids repeated investment in the family, with one machine for two purposes.

　　3. Domestic hot water

　　The air source heat pump uses the energy in the air to generate heat energy, providing the whole family with different hot water needs with large water volume, constant temperature and high water pressure 24 hours a day; the power consumption is 1/4 of ordinary electric water heaters, 1/3 of gas water heaters and 1/2 of solar water heaters.

　　Mold core pins are slender, cylindrical components inserted into the mold cavity to create holes or internal features in the final product. They are made from various materials, including stainless steel, tool steel, and carbide, depending on the application and material being molded. Their primary function is to ensure the accuracy and integrity of the internal features of molded parts.Today, people are interested in plastic mould part manufacturer There are also many dependencies, and the expectations for products are getting higher and higher. https://www.dghrjmmj.com

　　1. The Role of Core Pins in Injection Molding

　　Core pin injection molding relies heavily on the precision of these pins. They define the exact shape and dimensions of the internal features of a part. Any deviation in the size, shape, or position of the core pins can result in defects, affecting the functionality and aesthetics of the final product. High-quality mold core pins ensure that each molded part meets the required specifications with minimal variation.

　　2. Durability and Wear Resistance

　　Mold core pins must withstand the high pressures and temperatures of the injection molding process. A reputable mold core pins factory produces pins with excellent durability and wear resistance, ensuring they can endure repeated cycles without significant wear or deformation. This durability translates to longer mold life and consistent part quality over time.

　　3. Material Selection

　　The choice of material for mold core pins is crucial. Different materials offer varying levels of hardness, toughness, and resistance to wear and corrosion. A reliable mold core pins supplier can provide guidance on the best material for specific applications, ensuring optimal performance and longevity. For instance, carbide core pins are known for their exceptional hardness and wear resistance, making them ideal for high-volume production runs.

　　4. Surface Finish and Coating

　　The surface finish of mold core pins plays a significant role in the injection molding process. Smooth, polished surfaces reduce friction and wear, enhancing the pin’s lifespan and the quality of the molded parts. Additionally, some core pins are coated with specialized materials to further improve their performance. These coatings can provide additional wear resistance, reduce friction, and enhance the release of the molded part from the pin.Importance of Choosing the Right Mold Core Pins Supplier and Factory

　　Selecting the right mold core pins supplier and factory is critical to the success of the injection molding process. Here are some factors to consider:

　　5. Quality and Consistency

　　A reputable supplier ensures that each mold core pin meets stringent quality standards. Consistent quality is vital to maintain the precision and integrity of the molded parts, reducing the risk of defects and rejections.

　　6. Customization and Expertise

　　Different injection molding projects have unique requirements. A skilled supplier can provide customized mold core pins tailored to specific applications. Their expertise in material selection, design, and manufacturing ensures optimal performance and longevity.

　　7. Timely Delivery and Support

　　In the fast-paced manufacturing industry, timely delivery is crucial. A reliable mold core pins factory ensures on-time delivery of high-quality pins, minimizing downtime and production delays. Additionally, they offer ongoing support and assistance, helping manufacturers address any challenges that may arise during the molding process.

　　Mold core pins are essential components in the injection molding process, significantly affecting the precision, durability, and overall quality of molded parts. Choosing a reliable mold core pins supplier and factory ensures that these critical components meet the highest standards, contributing to the success and efficiency of the injection molding process. By understanding the role and importance of core pins, manufacturers can make informed decisions, leading to improved product quality and manufacturing efficiency.

　　This shows that, motion detector sensor It has a strong development pulse and is an indispensable source of power for the development of the industry. https://www.sunlit-tech.com

　　PIR sensor (Passive Infrared Sensor) is a passive infrared sensor. It is widely used in consumer products such as doorbells, cat eyes, induction switches, night lights, and security because of its low power consumption, low price, and simple use.

　　(1) PIR detection principle

　　PIR also has another alias, which is pyroelectric infrared sensor. Its detection principle is the pyroelectric effect, that is, the phenomenon that a substance will generate electric charge when the temperature changes. The normal human body temperature is 36-37 degrees, and the infrared radiation released is about 9-10um. The detection wavelength range of pir motion detector is generally in the range of 5-14um. That is, within the detection range of PIR, if there is an energy change of 5-14um wavelength, the PIR sensor will generate a current change, thereby giving a trigger signal. It should be noted here that PIR detects energy changes, not infrared radiation of a fixed wavelength. If an object with a fixed wavelength is not moving, PIR will not detect it.

　　(2) Advantages of PIR

　　Low power consumption, typical power consumption is about 10uA

　　Low price, ranging from one or two yuan to five or six yuan

　　Easy to use, the simplest one only needs to detect a pin level signal

　　(3) PIR classification

　　There are many types of PIR motion detector, which can be roughly divided into the following ways:

　　Enablement controllable: switchable PIR

　　Output signal type: digital PIR and analog PIR

　　Is the sensitivity adjustable: adjustable PIR and non-adjustable PIR

　　Sensitivity adjustment method: hardware adjustment and software programming adjustment PIR

　　(4) PIR selection

　　When selecting a PIR sensor, we generally need to consider the following basic requirements: voltage range, operating current, number of pins required, data output format, whether the sensitivity is adjustable, structural package size, and compatibility with the Fresnel lens. Another important consideration is cost. Without considering cost, it doesn¨t matter whether you choose a model or not. Just choose the best one. In actual product development, especially for consumer products, prices are very sensitive. Basically, all bosses want to use the cheapest device and debug it to achieve the best effect, especially for products with large shipments. If you don¨t have high requirements for product quality, it doesn¨t matter. If you have strict requirements for product quality and performance, you need to be very careful when selecting a model to avoid replacing the device when you find that it does not meet the requirements in the later stages of the project.