I've read several similar posts on here about bathroom mirrors with LED's and Demister pads, but can't find anything specific to my case, so hoping someone can give me some advice please. I have a new bathroom mirror which comes with and LED Driver inside, connected to LED strips which are 12v, and also a demister pad which runs at mains voltage via a High Voltage Switch.
Both the Demister and the LED's are controlled simultaneously via an IR switch on the underside of the mirror, which you swipe your hand under.
To me, this seems a bit odd, as if the mirror is steamed up, you have to swipe your hand to turn the demist pad on and wait for the glass to clear. Also, both LED's and Demister pad will stay on indefinitely until you swipe your hand underneath a second time to turn them off. The mirror draws around 40W while on, mainly the Demister, so I would rather not risk it being left on and wasting electricity and getting quite hot. Also I imagine we would want the LED's to be on without necessarily having the Demister on.
I don't know if it's possible with this setup, but I wondered if I could split the Demist function away from the LED's, and just have the IR switch control the LED's, as I'm not bothered (as much!) about them being left on. I have a spare Shelly Plus 1PM relay, which I could potentially use for the Demist function, as this could be activated automatically upon the shower turning on, either via a hot water pipe stat feeding the shower, or via a current clamp on the flex going to the shower. I use Home Assistant so can automate turning the Shelly on automatically upon one of these triggers. The thing is, the Shelly seems to have the load switched on the Neutral connection, and because the LED Driver and the Demist pad both share the Neutral, I don't see how I could control the Demist pad separately.
I've attached a wiring diagram of the current standard wiring, and just represented the crimp connectors as Wagos to make it a bit clearer. Can anyone help please?
Both the Demister and the LED's are controlled simultaneously via an IR switch on the underside of the mirror, which you swipe your hand under.
To me, this seems a bit odd, as if the mirror is steamed up, you have to swipe your hand to turn the demist pad on and wait for the glass to clear. Also, both LED's and Demister pad will stay on indefinitely until you swipe your hand underneath a second time to turn them off. The mirror draws around 40W while on, mainly the Demister, so I would rather not risk it being left on and wasting electricity and getting quite hot. Also I imagine we would want the LED's to be on without necessarily having the Demister on.
I don't know if it's possible with this setup, but I wondered if I could split the Demist function away from the LED's, and just have the IR switch control the LED's, as I'm not bothered (as much!) about them being left on. I have a spare Shelly Plus 1PM relay, which I could potentially use for the Demist function, as this could be activated automatically upon the shower turning on, either via a hot water pipe stat feeding the shower, or via a current clamp on the flex going to the shower. I use Home Assistant so can automate turning the Shelly on automatically upon one of these triggers. The thing is, the Shelly seems to have the load switched on the Neutral connection, and because the LED Driver and the Demist pad both share the Neutral, I don't see how I could control the Demist pad separately.
I've attached a wiring diagram of the current standard wiring, and just represented the crimp connectors as Wagos to make it a bit clearer. Can anyone help please?
