Johnson Controllers Mechanical Temperature Controller A19ABC-12C For Hot Water (Well Immersion)This is a universal replacement control for open high or SPDT applications. The control is furnished with a well assembly for 1/2 inch tapping.Features: liquid-filled element provides rapid response to temperature changeadjustable differentialuniversal replacement Product Specifications BRANDJohnson Controls CAPILLARY LENGTH FEET8 BULB SIZE INCHES0.290 x 2-1/2 MAXIMUM BULB TEMPERATURE °F (°C)290 (143) DIFFERENTIAL TEMPERATURE °F6 to 24 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 NUMBERA19ABC-12C