OverviewEverything you need to relocate or upgrade with a programmable thermostat without running new wires. Kit Includes C7735A1000 Return Air Sensor, THM5320R1000 Equipment Interface Module, TH6320R1004 Wireless FocusPRO 5-1-1 Programmable Thermostat, THM6000R1002 RedLINK Internet Gateway, C7089R1013 Wireless Outdoor Sensor.