• Can replace traditional electromechanical devices with improved accuracy and higher reliability • Designed for heating or cooling modes of operation • LED's indicate SPDT relay output • Wide adjustable differential of 20°F to +100°F • Sensor wire can be run up to 800 feet away • NEMA 1 high-impact plastic enclosure suitable for surface or DIN-rail mounting The A419 can be used to control a wide variety of single-stage refrigeration or HVAC equipment. Typical applications include: Frozen/refrigerated food cases, compressor lockout, beverage/milk coolers, condenser fan cycling, boiler control, pump control, space and return-air temperature control, immersion sensing for actuation of hot water and steam valves in heating applications