The Honeywell Lyric thermostat is made to work with most low voltage heating and cooling systems at 24 volts. Examples of low voltage systems are gas/oil furnaces, electric, hot water systems, heat pumps and forced air. The thermostat can handle multi-staged systems with more than one stage of heating and cooling.The Lyric thermostat does not work on system that use 110V or higher such as electric baseboard heaters.

If your current thermostat has thick red, black or white wires connected and held into place with a wire nut chances are you have a high voltage system and the Lyric thermostat will not be compatible with your HVAC system.

Honeywell Lyric Wireless Connected Platform

The Lyric thermostat is part of a complete wireless connected platform. This Honeywell platform has taken the lyric thermostat and built around it a security and home automation system called the Honeywell Lyric security system. The Lyric security system uses a new line of encrypted security sensors for maximum protection these devices are call SiX series sensors. Learn more about the Lyric security system 

Honeywell Lyric Thermostat PDF Manuals

Honeywell Lyric Security System Installation Videos