Line Volt Mechanical Tstat for Heating and Cooling, 120 to 240VAC/ CASE SURFACE TREATMENT: GREY PAINT,SEMI-GLOSS OPERATING TEMP RANGE: -30.0 TO 90.0 DEG FAHRENHEIT MAXIMUM VOLTAGE RATING IN VOLTS: 120.0 AC OR 240.0 AC POWER SOURCE: EXTERNAL MOUNTING METHOD: BRACKET MAXIMUM OVERALL WIDTH: 2.312 INCHES MAXIMUM OVERALL HEIGHT: 5.375 INCHES SENSING ELEMENT TYPE AND LOCATION: CAPILLARY TUBE INTERNAL