HC-SR501 PIR Sensor (Passive Infrared Sensor) + IR Proximity Sensor

The HC-SR501 PIR Motion Sensor Module allows you to sense motion. It is almost always used to detect the motion of a human body within the sensors range. It is often referred to as PIR, Pyroelectric, Passive Infrared and IR Motion Sensor sensors. The PIR Motion sensor module has an onboard pyroelectric sensor, conditioning circuitry, and a dome-shaped Fresnel lens.

The PIR Sensor has a delay time adjustment Potentiometer and a sensitivity adjustment Potentiometer. Repeat Trigger Selection Jumper is also available. Compatible with Arduino, Raspberry Pi, NODE MCU, PIC, 8051, etc.

The IR Proximity Sensor module has great adaptive capability of the ambient light, having a pair of infrared transmitters and a receiver tube, the infrared emitting tube emits a certain frequency, encounters an obstacle detection direction (reflecting surface), and infrared reflected back to the receiver tube receiving, after a comparator circuit processing, the green LED lights up, while the signal output will output digital signal (a low-level signal), through the potentiometer knob to adjust the detection distance, the effective distance range 2 ~ 10cm working voltage of 3.3V-5V.

The detection range of the PIR sensor can be adjusted by the potentiometer, with little interference, easy to assemble, easy-to-use features that can be widely used for robot obstacle avoidance, obstacle avoidance car assembly line count, black-and-white line tracking, and many other occasions.

Check out our entire range ofIR Proximity Motion Sensors

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read our blog explaining theinfrared sensor working principle,Learn about the components, physics laws involved, and their applications in proximity sensing, item counting, burglar alarms, and more.

PIR Sensor Pinout:

IR Proximity Sensor Pinout:

Applications:

• PIR sensors are used in thermal sensing applications, such as security and motion detection.
• The IR Sensor can be used in IP cameras.
• The PIR sensors are also used for Alarm systems and other crime-prevention devices.
• The IR sensor can be used for battery-driven human presence sensors for IoT smart homes.

Read our blog about how does a proximity sensor work where we discuss what proximity sensors are, the features of proximity sensors, how does proximity sensor work, and the different types of proximity sensors.

read our blog explaining theworking principle of pir sensor,provides comprehensive information about Passive Infrared (PIR) sensors.