The A72 Series temperature controls incorporate a vapor charged sensing element and heavy duty contacts. Product Specifications BRANDJohnson Controls CAPILLARY LENGTH FEET6 BULB SIZE INCHES11/16 x 6-3/4 MAXIMUM BULB TEMPERATURE °F (°C)135 (57) DIFFERENTIAL TEMPERATURE °F3 to 30 TEMPERATURE CONTROL RANGE °F50 to 90 RANGE ADJUSTERScrewdriver Slot SWITCH ACTIONDPST - Close High - Open Low TYPEAdjustable Differential LIMITED WARRANTY YEARS1