Honeywell RedLINK Enabled Wireless Indoor Air Sensor C7189R1004, For Prestige 2.0 Thermostat

Features the wireless indoor sensor(s) is used to change the sensing location of the thermostat works with redlink 2.0 thermostats sense temperature and humidity remotely average temperature control temperature and humidity in separate locations humidify and dehumidify in separate locations. for example, humidify on the main level and dehumidify in the crawl space up to 6 wireless indoor sensors per thermostat.