Johnson Controllers Mechanical Temperature Controller A19ADB-31C Remote Bulb, SPST - Open High, Heat OnlyThe 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 FEET10 BULB SIZE INCHES-- DIFF F°(C°)Manual Reset DIFFERENTIAL TEMPERATURE °F-- TEMPERATURE CONTROL RANGE °F90 to 235 VOLTAGE240 / 120 NEMA RATING1 STAGESSingle SWITCH ACTIONSPST - Open High TYPEHeat Only LISTING, RATING, CERTIFICATIONUL Listed LIMITED WARRANTY YEARS1 MANUFACTURER'S PART NUMBERA19ADB-31C