Miniature SR602 small Human Infrared Sensor Module

The SR602 small Human Infrared Sensor module is a miniature pyroelectric (PIR) motion detector that senses the infrared heat given off by a moving person. When it detects motion, its output pin switches HIGH, which a microcontroller, a transistor or a relay module can use to turn on a light, sound an alarm or wake up a device. Its very small size and low standby current make it a good fit for battery-powered projects.

SR602 small Human Infrared Sensor Specifications

• Sensor type: pyroelectric infrared (PIR) with a Fresnel lens
• Detects: movement of people and other warm bodies
• Output: digital, HIGH when motion is detected, LOW when idle
• Supply voltage: low-voltage DC, typically 3.3–15 V for SR602 modules
• Standby current: very low (microamp range)
• Pins: 3 (VCC, OUT, GND)
• Size: miniature, much smaller than the common HC-SR501

SR602 small Human Infrared Sensor Applications

• Automatic lights for stairs, wardrobes and corridors
• Intruder alarms and door chimes
• Arduino, ESP32 and ESP8266 motion projects
• Battery-powered presence detectors and smart home sensors

What's in the Box

• 1 × SR602 mini PIR sensor module

Tip: Give the sensor up to a minute after power-up to settle before testing, as PIR sensors can trigger falsely at first. Keep it away from heaters, air-conditioning vents and direct sunlight, which can also cause false triggers.

Orders placed before 14:00 are ready for pickup the same day. Delivery across Lebanon usually takes 1–3 working days.