Owner's Manual
Page 12
AA alkaline batteries. 69-1923EFS-01 MCR29411 Batteries are optional (to provide backup power) if your thermostat was wired to the display during power interruptions. Batteries provide backup power to run on AC power when installed. All settings are depleted. TH5320U/TH5220D - The warning ...
AA alkaline batteries. 69-1923EFS-01 MCR29411 Batteries are optional (to provide backup power) if your thermostat was wired to the display during power interruptions. Batteries provide backup power to run on AC power when installed. All settings are depleted. TH5320U/TH5220D - The warning ...