The A72 Series temperature controls incorporate a vapor charged sensing element and heavy duty contacts. Product Specifications BRANDJohnson Controls CAPILLARY LENGTH FEET6 BULB SIZE INCHES3/8 x 3 MAXIMUM BULB TEMPERATURE °F (°C)200 (93) DIFFERENTIAL TEMPERATURE °F3 to 30 TEMPERATURE CONTROL RANGE °F15 to 55 RANGE ADJUSTERScrewdriver Slot SWITCH ACTIONDPST - Close High - Open Low TYPEAdjustable Differential LIMITED WARRANTY YEARS1