Flush Mount Room Temperature Sensor with a 1,000 Ohm Platinum RTD [375 Alpha] Sensing Element. This Room Sensor has a Temperature Range of -40 to 240 deg F [-40 to 120 deg C] and is Designed for Those Applications Where a Covered Room Temperature Sensor is Not Acceptable. It Fits Over a 2 x 4 Electrical Conduit Box and Uses a Pigtail Connection. This Unit has a Desert Beige Plastic Cover.