Resideo - Honeywell Home C7089R1013 Temperature and Humidity Sensor

Temperature and Humidity Sensor; Type Wireless, Battery Powered; Operating Temperature -40 to 140 Deg F; Mounting Vertical; Size 3-1/2 Inch Width x 1-11/16 Inch Depth x 5 Inch Height; Application Outdoor, RedLINK Enabled Thermostat; Sensor Element Thermistor; Color Gray; Humidity 0 to 100 Percent RH (Condensing); Includes (2) AA Lithium Battery