The 243-12 series is engineered to handle rapid load changes and maintains a tight lock-up

a professional-grade condenser fan motor drip shield engineered for rigorous field use

designed for precise refrigerant flow reversal during cycle transitions

and Payne equipment to maintain factory efficiency

Is the orifice included with this part number

Resideo RT850 Relay Els PW 17895 The 243-12 series is engineeredThe Resideo RT850 Relay is a heavy duty 120V TRIAC solid state relay engineered for contractors who require high precision load management without the mechanical wear of traditional contactors. Designed specifically for electric heating applications like baseboard heaters, convectors, and radiant ceilings, this unit provides 100% silent operation. The solid state switching technology eliminates the "click" noise associated with mechanical relays,