Wireless focuspro thermostat: same great features of the focuspro thermostat - now wireless. installs in minutes. can display outdoor temperature and humidity. 1 year battery life. 2 month low battery warning. dual fuel enabled -requires c7089r1013 wireless outdoor sensor (sold separately.
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