2PCS PIR Sensor HC-SR501 Adjust IR Pyroelectric Infrared Motion Detector Module For Raspberry Pi Sensing Human Bod

Very small in size, it functions correctly with a long range. It would be desirable for the waiting time to be adjustable.

I've used those often. Quite easy to set up, and with an esp32 and a few automations in home assistant it can turn into a very good pir light system. So far, i've got multiple ones set up, and i've never had one fail. Nice item at a low price.

perfect works impeccably. contacted the seller because during a detection the reverse output causes the permanent 5V output to drop to zero. I wanted the opposite, chatted with the seller and a solution was found with a 2N2222 transistor. perfect!!!!

The presence sensor arrived well packaged and everything looks exactly as described. the build quality seems very good, and the module is compact, making it suitable for diy smart home projects. i bought it to use with an esp32 controller and integrate it into my home assistant setup. i haven't installed it yet, but based on the quality and first impression, i'm looking forward to testing it. it seems like a great value for the price.