Outdoor Remote Sensor, Sensor for Models:1F93,1F94,1F95(Outdoor Sensor - Models Only)Operating Range:(Based on Thermostat Range) F145-1378 Outdoor Model:-40 to 140DegF., Operating Humidity Range:0 to 90 Rh(Non-Condensing), Maximum Distance From Thermostat:300 Feet, Recommended Wire:18 Or 20 Gauge, 3-Conductor Shielded Cable. Color:Classic White, Dimensions:2-1/8"H X 3-1/2"W X 3/4"D, Outdoor Remote Includes 12Ft. of Outdoor Probe Lead.Weight:6.2oz. Made In Mexico, Mfg/Box.