I have a large old house. Boiler and radiators …
All I want is to be able to set the temp target using wifi, zigbee, zwave, matter. No smarts required, I’ll implement them in home assistant, no cloud wanted.
Discontinued Honeywell t6 seems best, which is not right. Does anyone make a simple temp sensor + relay + screen + buttons + way to control?
I have a Honeywell, may be overkill for what you want to do, but they are well made and allow you to customize things more as you go.
Go with the Honeywell T6 Pro Z-Wave, you want the TH6320ZW2007/U model with Smart Start. The old TH6320ZW2003 model was discontinued, the Smart Start one is readily available.
That’s the one
I have a few of these and they work great.
Two things to keep in mind with them–
If it’s on line power with a common wire (status shows power 24vac) when you include it, it’ll show up as a mains-powered device and will participate in the Z-Wave mesh as a repeater. BUT, if the power ever fails, it’ll drop off z-wave entirely and will not route or send updates or respond to commands. If you’re counting on this and a UPS-backed HA system to sense temperature, don’t do that.
If it’s on battery power (status shows battery power) when you include it, it’ll show up as a battery-powered device and will NOT act as a z-wave mesh repeater. If you connect it to 24vac (common wire) it’ll use that power and won’t drain the battery. However, it will remain available on the Z-wave network (on battery power) if/when the power fails.
The only way to change this setting is to uninclude and re-include it.
Also, this does not have any setting for setpoint delta. Normal thermostat you can set a delta like 1°, so if your setpoint is 70F it’ll start the heat at 69F and shut it off at 71F. This thermostat has a CPH (cycles per hour) setting that will use your system type setting along with some learning to put out approximately that number of on/off cycles per hour.
So if you select 1 CPH and your house has crap insulation your delta might be several degrees, if you select 1 CPH and your house has good insulation your delta might be half a degree.
Bad reply edited … thank you. I will look for a new t6