Intermatic K4221C Control Automatic Reset Logic: Resets when

Automatic Reset Logic: Resets when temperatures drop to 105°F

03-10 minute potentiometer allows for specific configuration based on manufacturer specifications or system requirements

or a malfunctioning pressure switch that causes excessive cycling

Thermal Resistance: High-grade fiberglass construction remains stable under the extreme temperature fluctuations found in gas furnace maintenance

Intermatic K4221C Control Automatic Reset Logic: Resets whenProfessional grade Intermatic K4221C Control units are the industry standard for reliable dusk to dawn lighting control. Built for the rigors of the field, this thermal photocontrol features a robust mechanical bimetal switch and a precision cadmium sulfide photocell to ensure consistent performance across extreme temperature ranges from 40? F to 158? F. The stem and swivel mount design, featuring a 1 2" 14 NPSM threaded stem, allows for flexible