Johnson Controllers Mechanical Temperature Controller A70GA-2C Remote Bulb, Cool Only, Four-Wire, Two-CircuitThe A70 Series mechanical temperature control incorporates a vapor-charged sensing element. The A70G, A70H, and A70K have a 4-wire, 2-circuit contact block that contains two isolated sets of contacts. The contacts are designed so that when the main contact opens, the auxiliary contact closes.Specifications: BRAND: Johnson ControlsCAPILLARY LENGTH FEET: 6BULB SIZE INCHES: 3/8 x 3MAXIMUM BULB TEMPERATURE F (C): 250 (121)DIFFERENTIAL TEMPERATURE F: 3 to 30TEMPERATURE CONTROL RANGE F: 35 to 80VOLTAGE: 240 / 120NEMA RATING: 1RANGE ADJUSTER: Screwdriver SlotSTAGES: SingleSWITCH ACTION: Main: Open Low - Aux: Close HighTYPE: Cool OnlyLISTING, RATING, CERTIFICATION: UL ListedLIMITED MANUFACTURER'S PART NUMBER: A70GA-2C