Review on π DAOKI 5Pcs IR Human Sensor AM312 Mini Detector Module HC-SR312: Automatic PIR Motion Detector for Arduino 2 A1U2, DC 2.7-12V by Darion Wooten
Very sensitive and not well shielded from EMI.
This IR sensor is very sensitive and susceptible to interference from the RPi 3B+ to which it is connected. Had to move the PIR about 2ft away from the RPi or you would get a lot of false alarms. The device is protected against RF and electromagnetic interference, and false alarms have disappeared.
- Ideal for outdoor activities
- Unreliable
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