Lennox DCM Smart Zoning System Damper Control Module (formerly iHarmony), Up to 4 Zones, 24 VAC

iHarmony Zoning System A major advance in precision climate control The iHarmony Damper Control Module allows you to change the temperature throughout the house, or change it in specific areas, with just a few taps of the thermostat or even your phone. Precise temperature control when integrated with premium Lennox heating and cooling equipment Reliable Performance: iComfort Wi-Fi thermostat required. iHarmony zoning system is only compatible with the iComfort Wi-Fi thermostat