I’m looking for a zigbee on/off switch to switch in my boiler (ketel) but when I see zigbee relay devices they all seem to have power on the make or break entry’s? I just want a device ( by battery or 230v) that makes the connectiin in the boiler. Whaf device can do this for me?
Tip is to use a “contactor” https://en.wikipedia.org/wiki/Contactor with any “smart” relay device you want.
https://www.google.com/search?q=Contactor&tbm=shop
Depending on controlling power needed for contactor you could use it with ex. relays discussed here:
https://community.home-assistant.io/t/ewelink-zigbee-rf-2ch-relay-module-working-with-zha/384069/
https://zigbee.blakadder.com/BTicino_FC80CC.html
Like this device? Ehy would i still need a relay? If this would work?
Yes but I actually meant that you should use a normal “dumb” non-Zigbee contactor in combination with any other Zigbee relay device and just use the Zigbee to control the “dumb” non-Zigbee contactor.
That is, use a non-smart contactor matching requirements in combination with any Zigbee relay device.
That way the dumb contactor is only used as a “dry contact” to fully separate load from the control unit.
https://en.wikipedia.org/wiki/Dry_contact
You can use any smart switch / smart plug as the control unit / controlling equipment with this solution.
The only recommendation I have there is to get a quality contactor from a well known manufacturer, like example; ABB, Siemens, or Schneider Electric, and that its specifications exceed requirements.
Examples:
https://www.instructables.com/Make-Your-Home-Smart-With-Sonoff-and-Contactor/
Still mot sure why I would need an manual switch? It’s just the same as a door sensor. In fact I thibk I could make it with an aqara door sensor. Just replacing the magnetuc for as the connect in the boiler. 5 Volt I believe is the consumer.