Johnson Controllers Mechanical Temperature Controller A19AAC-4C Remote Bulb, SPDT, Heat & CoolThe A19 Series mechanical controls are single-stage temperature controls that incorporate environmentally friendly liquid-filled sensing elements.Features: Wide temperature ranges availableConstant differential throughout the entire rangeCompact enclosureFixed or adjustable differential availableVariety of sensing element stylesUnaffected by cross-ambient conditions Product Specifications BRANDJohnson Controls CAPILLARY LENGTH FEET6 BULB SIZE INCHES3/8 x 4 MAXIMUM BULB TEMPERATURE °F (°C)140 (60) DIFFERENTIAL TEMPERATURE °F5 TEMPERATURE CONTROL RANGE °F0 to 80 VOLTAGE240 / 120 NEMA RATING1 STAGESSingle SWITCH ACTIONSPDT TYPEHeat & Cool LISTING, RATING, CERTIFICATIONUL Listed LIMITED WARRANTY YEARS1 MANUFACTURER'S PART NUMBERA19AAC-4C