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Home / Computer Hardware, Monitors & Peripherals / HC-SR312 Mini Human Motion Sensor Module PIR Infrared Pyroelectric Human IR Sensor
Computer Hardware, Monitors & Peripherals

Attributes

Brand -
Category Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals
Origin -
Operating Voltage DC 3.3V - 5V
Detection Distance Up to 3 meters
Detection Angle 100 degrees cone angle
Output Signal High level (3.3V) / Low level (0V)
PCB Size 10mm x 11mm
Operating Temperature -20°C to +80°C
Current Consumption < 60uA (standby)
Trigger Mode Repeatable trigger
Block Time 2.5 seconds (default)
Weight 1.5 grams

5 reviews

A

Anonymous

Mar 10, 2026

Rating: 5/5

Exactly as described

Fast delivery and the sensor detected motion immediately upon wiring.

A

Anonymous

Mar 08, 2026

Rating: 4/5

Good sensitivity

Works well but needed some adjustment on the potentiometer for my specific room size.

A

Anonymous

Feb 19, 2026

Rating: 5/5

Great value

Bought five for different rooms. All working perfectly for light automation.

A

Anonymous

Feb 17, 2026

Rating: 5/5

Perfect for IoT projects

Tiny size makes it easy to hide in enclosures. Works flawlessly with ESP8266.

A

Anonymous

Feb 07, 2026

Rating: 3/5

Needs careful wiring

Functionality is good but the pins are very close together. Soldering requires a steady hand.

5 FAQ

Q: How do I adjust the sensitivity?

A: There is a small potentiometer on the back of the module.

Q: Does it output analog or digital signal?

A: It outputs a digital high/low signal.

Q: Can this be used outdoors?

A: It is not weatherproof. Needs a protective enclosure for outdoor use.

Q: What is the maximum detection range?

A: Approximately 3 meters in optimal conditions.

Q: Is this compatible with 5V Arduino?

A: Yes, it operates within 3.3V to 5V range.

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