Johnson Controllers Mechanical Temperature Controller A19AAC-9C High Range, SPDT, Heat & CoolThe A19 Series mechanical controls are single stage temperature controls that incorporate liquid-filled sensing elements.Features: wide temperature ranges availableconstant differential throughout the entire rangeSPST or SPDT snap-acting switchesfixed or adjustable differential availableunaffected by barometric pressure changesunaffected by cross-ambient conditionscompact enclosurevariety of sensing element styles Product Specifications BRANDJohnson Controls CAPILLARY LENGTH FEET6 BULB SIZE INCHES3/8 x 3-1/2 MAXIMUM BULB TEMPERATURE °F (°C)290 (143) DIFFERENTIAL TEMPERATURE °F6 TEMPERATURE CONTROL RANGE °F100 to 240 VOLTAGE240 / 120 NEMA RATING1 STAGESSingle SWITCH ACTIONSPDT TYPEHeat & Cool LISTING, RATING, CERTIFICATIONUL Listed LIMITED WARRANTY YEARS1 MANUFACTURER'S PART NUMBERA19AAC-9C