Technical Specification Item Outdoor Sensor Type Replacement Sensor For Use With Redlink(TM)-Enabled Thermostats and Accessories Remarks Senses Outdoor Temperature and Humidity to Display on Redlink-Enabled Thermostats and Accessories Color Gray Height (In.) 5 Width (In.) 3-1/2 Depth (In.) 1-11/16 Operating Temp. Range (F) -40 to 140 Compliance and Restrictions This item is restricted for international sale. This listing is for each.