CUSTOMIZE: Choose to receive change filter reminders and select display settings to optimize this thermostat for home.The RTH11B is a replacement for the non-programmable RTH5160 for 1 heat, 1 cool applications EXPERIENCE: A large screen and clear font enhance daily use INSTALLATION: The Honeywell Home UWP wall plate provides an easy install process and simplifies future device upgrades FEATURES: Backlit display, Custom display settings, Change filter reminders, 32°F low-heat setpoint, 1-year warranty COMPATIBILITY: 1 Heat/1 Cool, 750 mV, hot water heat, forced air (gas, oil, or electric) [does not work with electric baseboard heat (120-240V)]. Please check the type of HVAC system your home has prior to selecting this product to insure it is compatible. POWER: 2 AA batteries (not included)