I've tried several approaches but none of them seem to be reliable. Here's the scenario where I could use some extra eyes and thoughts:
- There is a built-in bathroom vent fan that...
- Has an integrated humidity sensor that prevents a simple "switch to on" from always turning on the fan
- Can be forced to on, but only if manually and quickly switched on -> off -> on in about 1 second
- I placed an energy monitoring Zigbee smart switch as the wall switch for this fan (a Jasco / Enbrighten Model 43078)
- A stand-alone zigbee PIR motion sensor has been placed in the bathroom as the trigger for this scenario...
- When the PIR sensor is triggered...
- Wait one minute
- Turn on the fan