Honeywell YTL9160AR1000 Wireless Non-Programmable Line Volt Thermostat Kit

Equipment Interface Module (Eim): All Hvac Equipment Is Wired To The Module. Module Receives Communication From The Wireless Devices Return Air Sensor: Works With The Equipment Interface Module To Maintain Safe Indoor Temperatures If Power Is Lost At The Wireless Thermostat. Maintains 62 F For Heating And 82 F For Cooling Red Link Wireless Technology: Powered By Red Link Reliability. No Interference With Other Wireless Devices In The Home Country Of Origin: United States Outer box is open with all small inside boxes sealed. See pictures for details.