How To Replace Battery In Honeywell Thermostat Video. Snap the thermostat back onto the wall plate. When the low battery alert appears, press gently to loosen the thermostat and then carefully pull it from the wall mount.
When the low battery alert appears, press gently to loosen the thermostat and then carefully pull it from the wall mount. They have mechanical temperature sensors, so they don't need batteries, and they're easy to mount. Remove and dispose of the old batteries.
Replace the battery and put it as it was earlier.
For 9 volt batteries you should replace them every six months. The battery housing is not labeled but it is easy to locate it. Well there you go, now you know how to change batteries in your honeywell thermostat, starting from the classic honeywell thermostat 1000 and 2000 series. This video will show you the precise method to replacing the cr2032 battery inside your honeywell 5811 sensor.