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Indeed, a Shelly UNI may be powered with 26V DC. But the maximum current driven by each output of the UNI is 100mA. I assume the current needed by the solenoid will be higher. This must be objective of an investigation by measurement.
Indeed, a Shelly UNI may be powered with 26V DC. But the maximum current driven by each output of the UNI is 100mA. I assume the current needed by the solenoid will be higher. This must be objective of an investigation by measurement.
Many thanks for confirming! I'll investigate the solenoid further, the sticker on it says 12VAC and I think 15W, which I assume is the maximum rating.
My second option is installing the Uni inside the phone unit and use it to close the small momentary switch (bottom right in this photo). Triggering the switch would force the control module to provide the 12VAC necessary to activate the solenoid.
15 W at 12V AC gives more than 1 ampere! You’ll need a relay to drive the solenoid.
