Owner's Manual
Page 11
...ENGLISH All settings are optional (for more than a month. Turn thermostat over, insert fresh AA alkaline batteries, then reinstall thermostat. The warning flashes about two months before leaving home for backup power) if your thermostat was wired to run on AC power when installed. Replace batteries once a... year, or before the batteries are depleted. Batteries provide backup power to remove thermostat from wallplate. Battery replacement Pull at bottom to...
...ENGLISH All settings are optional (for more than a month. Turn thermostat over, insert fresh AA alkaline batteries, then reinstall thermostat. The warning flashes about two months before leaving home for backup power) if your thermostat was wired to run on AC power when installed. Replace batteries once a... year, or before the batteries are depleted. Batteries provide backup power to remove thermostat from wallplate. Battery replacement Pull at bottom to...