PIR Motion Sensor Detector Module HC-SR501

The PIR Motion Sensor Detector Module HC-SR501 is the perfect solution if you’re looking to detect human motion quickly and reliably. To begin with, this module is widely used in security systems, lighting automation, and home automation projects. Since it can accurately sense movement within a specified range, it becomes essential in applications that require human presence detection. In particular, this sensor works seamlessly with microcontrollers, SBCs, and low-power CPU platforms.

Moreover, the HC-SR501 uses a passive infrared (PIR) sensor that detects motion based on changes in infrared radiation. As a result, it can detect a human entering or leaving a room without direct contact. In addition, the module includes a pyroelectric sensor, a dome-shaped Fresnel lens, and onboard control circuitry. Consequently, it delivers precise readings while minimizing false triggers.

Furthermore, the module comes equipped with two potentiometers that allow you to fine-tune delay time and sensitivity. Thanks to this feature, you can optimize its behavior according to your environment. Also, its operating voltage (5V) and digital output make it extremely easy to integrate with any MCU, including Arduino, Raspberry Pi, ESP32, and 8051 boards.

Not only is this sensor compact and affordable, but it is also extremely power-efficient. Therefore, it is suitable for battery-powered and low-power automation setups. If you’re building a security system or automatic lighting controller, this module should definitely be part of your design.

To learn more, check out our detailed guide on interfacing the PIR Motion Sensor Detector Module HC-SR501 with Raspberry Pi and other platforms.

Note: The Product is available in two colors Blue and Green, therefore packing you may get any one of them.

Datasheet

Circuit Diagram of PIR Sensor With Arduino:

 Features :

1. Infrared Sensor with Control Circuit Board
2. The Sensitivity and Holding Time are adjustable.
3. Blockade time: 2.5s (Default)
4. Sensitive Setting: Turn to Right, Distance Increases (About 7M); Turn to Left, Distance Reduce (About 3M)
5. Time Setting: Turn to Right, Time Increases (About 200S); Turn to Left, Time Reduce (About 5S).

Package Includes :