While you wait for answers, we may have found some information which could help you.
Click here for Battery Batteries Model
How to remove the front cover of my Digistat 2RF receiver?
How do I reprogram my ideal bolier rf thermostat receiver?
Honeywell921?
boss therm not working ?
is there a way to just simply turn the temperature up?
how often do we change the3032 battery in a digistat +2rf?