Honeywell Commercial TR21 Temperature Sensor

Temperature Sensor; Type Non-Linear, Direct Wired; Temperature Range 55 to 85 Deg F (Set Point); Accuracy +/- 0.36 Deg F; Cable Type Unshielded, Twisted Pair; Operating Temperature 45 to 99 Deg F; Storage Temperature -40 to 150 Deg F; Mounting Wall Mount; Size 3 Inch Width x 7/8 Inch Depth x 4-13/16 Inch Height; Application Network Sensor; Approval UL 94, CE, FCC; Sensor Type 20 Kilo Ohm NTC Non-Linear; Color White; Humidity 5 to 95 Percent Relative (Non-Condensing)