Fixing uncompatible PIR sensors with Shelly devices

Modified on Wed, 13 Sep 2023 at 02:06 PM

1. Summary

It is possible to use 220VAC PIR sensors and connect them to SW input of Shelly devices. Some PIR sensors are not compatible unfortunately and they are registering fake movement or does not trigger movement at all.

2. How to resolve ?

Add 330 kOhm 2 watt resistor .

Resistor has to be installed between PIR's L' and Shelly's SW input!

It should resolve the mentioned problems.