Honeywell International, Inc. Temperature Sensor TR21-A

3 INCH WIDTH X 7/8 INCH DEPTH X 4-13/16 INCH HEIGHT SIZE UL 94-HB, CE, FCC APPROVAL NETWORK SENSOR APPLICATION WALL MOUNT MOUNTING 45 TO 99 DEG F OPERATING TEMPERATURE 55 TO 85 DEG F (SETPOINT) TEMPERATURE RANGE -40 TO 150 DEG F STORAGE TEMPERATURE SENSOR TYPE UNIQUE 10 KILO OHM NON-LINEAR, TWO 20 KILO OHM IN PARALLEL COLOR WHITE OPERATING HUMIDITY RATING 5 TO 95 PERCENT RH (NON-CONDENSING) USED ON EXCEL W7750/W7751A/W7752/W 7753 CONTROLLER, SPYDER UNITARY CONTROLLER, TB8220 THERMOSTAT SERIES TR20 MODEL