Wall Module, Networked Sensor, No Network Jack, 20 K Ohm NTC Non Linear Sensor Type, White in Color, 55-85 Degree Setpoint Temperature Range, 5-95% RH Non Condensing Operating Humidity Range, Mounts on a Standard 2"x4" Junction Box or on a 60mm Diameter Junction Box

Specifications:

Manufacturer: Honeywell
Manufacturer Part Number: TR21
Product Type: Wall Module
Electric Resistance Measurement: 20K OHM
Temperature Range: 55 to 85 Degrees F
Operating Humidity: 5 to 95% RH
Dimensions: 5.15" x 3.9" x 1.75"
Weight: 2.0 lb.