Johnson Controls - PENN A421ABD-02C Series Electronic Temperature Controls with Off-Cycle Defrost HVAC thermostat Class 0 Air Duct

Class 0 Air Duct

a pre-cleaning step is required before treatment

Fast repairs completed in 90 seconds

This product kills on hard

Johnson Controls - PENN A421ABD-02C Series Electronic Temperature Controls with Off-Cycle Defrost HVAC thermostat Class 0 Air DuctJohnson Controls PENN A421 Series Electronic Temperature Controls with Off Cycle Defrost The A421 Series controls are single stage, electronic temperature controls with a single pole, double throw (SPDT) output relay. The controls feature an adjustable backlit LCD for viewing the temperature and status of other functions, and a three button touchpad for setup and adjustment. An LED indicates the on off status of the output relay. The A421 controls are