The Honeywell RTH5100B1025 digital non-programmable thermostat comes with a large, clear, backlit display that is easy to read, even in the dark.
Removable Battery Holder
The RTH5100B1025 non-programmable thermostat includes a removable battery holder for fast, easy replacement.
Prevents Damage to Compressor
This digital thermostat helps prevent damage to the compressor in your air conditioning or heat pump system with built-in compressor protection.
Automatically Selects Heating/Cooling
The RTH5100B1025 features an auto changeover function that automatically selects heating or cooling depending on the indoor temperature.