I've rigged up a Shelly 1PM to my secondary circulation pump. I've installed three Shelly Motion Sensors in areas that would be triggered as one approaches three hot water taps in my house. All four devices are recognised by my Shelly iOS app and they all work, in that the app can see when each motion sensor is tripped and the Shelly 1PM can be switched on or off from the app.
BUT... can't seem to get the sensors to activate the 1PM which was the whole point of this. In the 1PM settings, there is an "Addon Sensors" drop down menu, which presumably is where the setting is to be found, but clicking on that drop down reveals a message which says "Unsupported Addon, please update firmware". I have updated all the firmware (as far as I can tell) and no joy. Still having the same issue.
Weird. I have contacted Shelly customer support, but they are a bit slow and this is bugging me. I'm not the patient sort!