Having made the (forced) move for all my remaining devices from Smartthings to HA, I have some remaining issues with my Z-Wave SRT323: The battery levels are incorrect (always report empty) and I have some issues in NodeRed. Given that it’s the only Z-Wave device I have on my network, I’m considering replacing that wall thermostat that has served me well for about 10 years.
I have difficulty finding a Z-Wave or ZigBee replacement. The SRT323 is quite dumb and the only features I really use are: set target temperature remotely and use node-red to trigger automations when someone touches the dial. To be honest: that’s enough as everything else I manage in HA.
The wiring is quite simple as well, see picture below: there is a relay and if the temperature is too low, it switches so it “calls for heat” - again, in my setup that’s more than enough.
Can anyone recommend a suitable replacement which has been tested and works well with HA. Either ZigBee or Z-Wave is fine.
Are you using this as your thermometer also?
In HA you can create “virtual” thermostats with just a temperature sensor and a input boolean.
When that is done you could control this virtual thermostat from a screen, like tablet, NS panel or just a ESP-Home based rotary encoder.
Or if it has to be ZigBee/z-wave something similar. Like the ZigBee rotary knobs.
I have my thermostats on a NS panel in the kitchen with just up/down buttons to control the temperature
I do but I need the relay that switches the heating on which hangs on that wall, in the current location as my partner is not that big on my 3-d printed designs
For which Z-Wave frequency are you looking (e.g. EU, US …)? I needed a battery-powered relay/thermostat as well and I haven’t been able to find any other than the SRT323 (I went with Netatmo instead, but that’s mostly a cloud solution - there’s Homekit support, but Homekit is pretty limited functionality-wise).
@mundschenk-at I’m based in the UK so EU frequency. Did you get the SRT323 to work properly, e.g. report battery levels more or less accurately? Mine always says 0% whilst the screen works
@templeton_nash - that looks nice and I will explore further. I’m not sure my wall has the hole behind the thermostat but besides that, the device looks very nice.
I had 2 2gig thermostats z-wave with ability to power from a common wire in addition to batteries. I eventually replaced them with ecobee 3 lite. I don’t use all the features and it is cloud based. The ecobees’ have worked perfectly but they do have a delay and updates can be slow. I also used an add-a-wire to get the common wire to the main floor. The ecobees’ are not battery powered.
I use a sonoff mini to replace my old thermostat. I’m able to cover it with just a blank faceplate from B&Q. I stuck a Xiaomi temp and humidity sensor to the faceplate. If you don’t have the depth then buy a junction box to sit on wall
