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Use your favourite low current but mains controlling thing and add a contactor, eg https://www.screwfix.com/p/british-general-fortress-20a-dp-contactor-no/6654P
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This isn't a switch but a switch can be wired to it. Claims to handle 10A (Although I don't think it's particularly different from the Shelly 1pm)
https://smile.amazon.co.uk/gp/product/B08RYT9XGLNot sure about an indicator light though. I think your easiest option there would be to have a separate indicator controlled by HA or rather than an actual switch something like this https://thepihut.com/collections/raspberry-pi-cases/products/az-touch-pi-zero-wall-mounting-touchscreen-set with a Pi wall mounted and a HA dashboard that allows you to turn the heating on and off and indicates its current state.
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jellybaby
aggi
@Colm89
Does anyone know of a wired switch, ideally zigbee but open to WiFi if it offers local control, that can handle a relatively high load (10a)?
As I mentioned previously I’m going down the road of building a diy zoned central heating system in HA, using a pretty basic oil fired central heating system (oil burner operated by an apt wall timer, no zones, no thermostats, either all on or all off).
So far I have gotten a zigbee sonoff temperature sensor for each room added and currently recording temperature and humidity, but now need a switch to replace the old apt timer.
My initial thought was to use a Shelly 1pm, which is perfect only I want to retain a physical switch with an indicator light to show when it’s on, and this becomes very slightly more complicated. There are of course plenty of zigbee light switches that would be perfect, only I don’t think they’d handle the starting load of the burner when it fires up.
Anything I am missing?