The Secret Weapon of Intelligent Sensing — — PIR Sensor

PIR sensors are key detection elements in wearable devices, network monitoring equipment, intrusion alarms, and automatic energy-saving furniture.

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Winsen PIR Motion Sensor

The full name of PIR sensor is Passive Infrared Sensor, we also call it PIR motion sensor. PIR sensors can detect infrared rays radiated by living bodies in a non-contact form. It is usually used to detect whether the living body is moving within the detection range.

Winsen has more than ten kinds of PIR motion sensors, you can choose them according to the function or application.

You can buy our PIR motion sensor on Alibaba, AliExpress. Or contact us directly, no quantity limit.

Winsen PIR Motion Sensor Series



Window size (mm)




RD-624P/ 626WP

/ RPTA-646

4*3/ 5*3.8/ 4.9*4.9

TO-5 metal housing
Different window sizes
Excellent EMI,WIFI protection

Auto light Switch
Auto door switch
Intelligent toys
Passive intrusion alarm


RDA(B)223/ 224/ 226

4*3/ 5*3.8

Pyroelectric signal processing is integrated inside the sensor, lowering the threshold of use

LED lighting
Smart home




Quaternary products, double compensation, better stability
Can achieve coverage of circular detection area

Dome light automatic extinguishing product design

Advantages of PIR Sensors

Good Selectivity

Strong Anti-Interference

Anti-small animal, electromagnetic, light interference

High Sensitivity

Low Cost

TO-5 package, saving time in circuit design and placement

Small and Portable

Various Options

Digital, Analog, Modular

Simple Structure

Good Concealment

Small size, small volume

Discuss the detection distance range of PIR motion sensor

No matter what application the PIR motion sensor is used in, we will pay attention to the maximum distance that the product can detect. The PIR motion sensor needs to be used with a Fresnel lens. The test distance is related to the lens. There are 5 meters, 8 meters and further distance options.

If you need, we can provide lens for sale together.

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pir motion sensor

How to choose the right PIR motion sensors?

How to choose the right PIR motion sensor

PIR motion sensors usually look similar, but the internal configuration is very different. There are several major indicators for the selection of PIR motion sensors.

① Look at the size of the window. The current window size is 4*3mm, 5*3.8mm, and 4.9*4.9mm.
②Analog, digital or semi-digital output mode
③Selection of application scenarios: automatic door switch,
anti-intrusion alarm, smart home, etc.
④Whether additional functions are needed, such as delay adjustment, sensitivity adjustment, photosensitive control, etc.

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How PIR motion sensors become one of the sensing layers of IoT systems

PIR motion sensors can be used to control hallway lights or any other areas that don't need constant light to save electricity. The basic component of this type of smart sensing is the sensor.

Taking the smart home field as an example, when the PIR motion sensor receives an intrusion signal, it can immediately activate the smart door lock, and the smart camera will automatically take pictures to obtain evidence and send an alarm message. The new smart home system is changing our future.

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PIR motion sensors

How Winsen guarantees the quality of PIR sensors

Winsen has strong R&D strength. At present, we have more than 100 R&D personnel and more than 500 sets of various production and R&D equipment. Many R&D achievements have passed the appraisal of scientific and technological achievements in Henan Province and reached the international advanced level. At present, we have more than 100 invention and utility model patents, more than 10 software copyrights, and lead or participate in the formulation of 14 national and industry standards.

Winsen PIR sensors will be aged, calibrated, tested and packaged before delivery from the factory, and then sent to the warehouse for delivery. Please trust that we will not affect the delivery time by doing so. We also have long-term cooperative couriers (DHL, FEDEX, UPS, EMS etc.) to ensure that the sensor will not be violently treated during transportation.

We can provide you with professional advice in different industries.

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Winsen,Create Value for Customers


7 sensor series

200 +

200+ categories

300 +

300+ indicator detection

From AR E***r

From AR E***r

the sensor is excellent and the delivery service worked perfectly. Use DHL and it arrived in 12 days, very good delivery service

27 Mar,2023

From EE L***o

From EE L***o

First impressions very positive, easy to use, display perfect and seems to work perfectly.

11 Apr,2023

From RU A***n

From RU A***n

Выглядит симпатично, есть регулировка яркости экрана. Данные ppm более менее совпадают с другими моими датчиками (mh-z19). Можно доверять показаниям co2. Температура и влажность не совпадают с другими датчиками, но очень близкие показания (различие в 1 градус, и до 5% влажности. Точность сойдёт для бытового использования.

18 May,2023

From NL N***n

From NL N***n

Works great and I trust it's accuracy.

25 Mar,2022

From RU V***o

From RU V***o

Item as described. Good seller. Nice to deal with.

18 Mar,2022

From US R***r

From US R***r

Works as replacement for sensor used in Invisiclean. Shipped quickly and was well packaged.

22 Jul,2022

Related Products

PIR Motion Sensor Guide

We have summarized the following questions to help you make better choices.


How does a PIR sensor work?


PIR sensors can sense motion. They are used to detect whether a person enters or leaves the range of the sensor. Commonly found in appliances and gadgets used in the home, business, or business. They are often called PIR, "passive infrared", "pyroelectric" or "IR motion" sensors.


Can a PIR motion sensor work all day or under lights?


Yes. Winsen PIR motion sensor has strong anti-interference performance. In addition, it can prevent small animal interference and anti-electromagnetic interference.


Why is the PIR motion sensor unresponsive during the test?


1. The person is not moving.

2. Exceeding the sensing angle and distance (normally configured Fresnel lens can detect 15 meters).

3. There is a problem with the sensor itself and needs to be replaced in time.


What are the applications of PIR motion sensors?


Smart office appliances; family, smart home;

Automatic lighting switch, security door; security, intrusion alarm, indoor access management;

Security products; human sensor toys; human sensor lamps, switches, home appliances; industrial automation control


Are there any requirements for PIR motion sensor installation?


Please pay attention to the window direction of the sensor when designing the product, combining with the Fresnel lens can achieve an ideal detection angle. Frequent and excessive vibration will cause the sensitive body inside the sensor to break, so handle it with care.

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