Pro1 IAQ Wireless Outdoor Temperature Sensor for Z955W or T955WH

Wireless Outdoor Remote Sensor Accessory for T955WH and Z955W (required and sold separately) Displays outdoor temperature on T955WH and Z955W User selectable balance point Wireless balance point for heat pumps Weatherproof case Battery powered Range between the remote and a master thermostat is up to 100 feet with no obstructions and up to 50 feet in standard residential metal, brick, and concrete construction.