I have a Honneywell programmable 7 day thermostat. I have not been able to separate the front part from the back part. The back part contains the mounting plate and the battery. The front part contains the setting and the circuit board. There must be a simple way to do this. There were no instructions on how to do this

Honeywell | Thermostat | Air Cleaners | Humidifier | Ventilation | Water System | Home Security | Gas Detector | Honeywell Thermostats - Honeywell Your Home Expert (http://www.yourhome.honeywell.com) Try that for the info you request. (get your model number)