I want to put some devices like NVR, modem, router, et cetera in a closet.

I’m having an electrician install a 240v AC power socket in the closet.

I’d like to cut a hole in the top of the closet through to the ceiling cavity for an exhaust fan.

I’m hoping to decommission my home server so I’d like to avoid having to run exhaust fans from a computer / PC power supply.

With all that in mind, I’m looking for one or more devices that will allow me to run two PWM case fans with thermostat from 240v.

  • @NeoNachtwaechterEnglish
    3•2 days ago

    If I remember correctly (you’d better googel it to be sure), PWM case fans use a steady 12V supply, plus a pwm signal.

    I’d buy an ESP, connect a temperature sensor, put the Tasmota firmware on it and be fine. The programming is a one liner then (in that weird tasmota rules language).

    If it turns out that the fan needs a pwm “chopped” 12V supply instead, then you need to add a MOSFET and 2 resistors to create that.

    P.S. that module from the other comment is better.