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

Attributes

Brand -
Category Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals
Origin -
Operating Voltage DC 3.0V - 5.0V
Detection Distance Up to 3 meters
Detection Angle 100 degrees cone angle
Output Signal 3.3V TTL High/Low
Quiescent Current < 50uA
Operating Current < 60uA
Delay Time Adjustable (Default 5s)
Block Time 2.5 seconds (default)
Dimensions 10mm x 10mm x 9mm
Operating Temperature -15°C to +70°C

5 reviews

A

Anonymous

Apr 08, 2026

Rating: 5/5

Easy to use

Plug and play with my ESP32. Documentation helped.

A

Anonymous

Mar 19, 2026

Rating: 5/5

Tiny but mighty

Great for battery powered projects due to low current draw.

A

Anonymous

Feb 07, 2026

Rating: 4/5

Good sensitivity

Detects motion well, but range is slightly less than expected in bright light.

A

Anonymous

Feb 03, 2026

Rating: 3/5

Okay for prototypes

Works but needs careful calibration for stable output.

A

Anonymous

Feb 02, 2026

Rating: 5/5

Perfect for Arduino projects

Works flawlessly with my Uno. Very small footprint.

5 FAQ

Q: Can I adjust the sensitivity?

A: Yes, there is a potentiometer for distance adjustment.

Q: Is the output normally high or low?

A: The output is normally low and goes high upon detection.

Q: Can this run on 3.3V?

A: Yes, it operates between 3.0V and 5.0V.

Q: Is this waterproof?

A: No, this module is for indoor use only.

Q: Does it work with Raspberry Pi?

A: Yes, compatible with GPIO pins using 3.3V logic.

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