A
Anonymous
Apr 08, 2026
Rating: 5/5
Easy to use
Plug and play with my ESP32. Documentation helped.
Description
HC-SR312 Mini PIR Motion Sensor Module Infrared Pyroelectric Human Body IR Sensor
Reviews
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
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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