Line Voltage T-Stat Industrial Control Switch Type SPDT Switch Action Open and Close Number of Switches 1 Control Range -30 to 90 F Differential3.5 Deg F Height 4 1/2 In Width 2 1/8 In Depth 2 1/8 In Overall Length 4 1/2 Temp Sensitivity +/- 3 Deg F Sensor Type Hydraulic Capillary Sensing Bulb Dia 3/16 In Sensing Bulb Length 5 In Capillary Length 96 In Color Gray Application Heat and Cool Enclosure Type Steel Includes 96 In Extended Capillary Tube