Bathroom light anf fan automation

glavaski

I have two way bathroom light switch and bathroom fan.I want to make my fan smart.I want when I turn on bathroom lights (more then 2 minutes) to turn on bathroom fan ,and to stay on 5 minutes after the lights are turn off.

Also I want to turn on bathroom fan manualy with switch.

Does the bathroom lights and fan need to be conected to same phase.Because signal from the light swith goes to the S2 and signal from fan swith goes to the S1 on Shelly 2PM.I don want to fry my shelly.

This is the diagram.

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Or it can be done with Shelly 1 mini and Shelly PM mini and program it to work together?

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What is the best solution?

thgoebel

Input SW1 in first diagram will not work: It will be steadily activated cause the light (above on the right) will give neutral potential at SW1, which causes the input to detect an on condition. You should connect the light (above right) to output O2!

And please double check you’ve only one phase of live wire in your wiring!