Honeywell C7189U-1005 Indoor Temperature Sensor is used with the TH8000 Vision Pro Thermostat series. Connection to sensor is made with 18/2 thermostat wire (not included). The Remote Indoor Temperature Sensor is used to sense temperature remotely at the sensor location and not where the thermostat is located.
Fits the following VisionPro 8000 Model Thermostats:
NOTE: Thermostats can accept EITHER an indoor OR outdoor sensor - not both. Maximum distance between thermostat and sensor is 200 feet.