Review on π¦ 5pcs HC-SR501 Human Body Pyroelectric Infrared PIR Motion Detector Sensor Module by Oiyagai by Sam Hansen
Buy multipliers for security and surveillance
They are small and when they work they work very well. I have ordered two. One works fine and the second came dead. They are good up to 10 or so feet.
- practical thing
- I don't remember
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