INTERMATIC Compressor Defender® Surge Protective Device with Undervoltage Protection CD1 024R pre filled dispensers Phenol Red cleanig Phenol Red Latex MicroFinish coating provides a superior grip in dry and wet conditions by reacting like tiny suction cups that attach themselves firmly to the material being handled state of the art TPMOV® (Thermally Protected Metal Oxide Varistor) surge protection technology eliminates the potentially hazardous failure modes that are associated with standard MOV technology The COMPRESSOR DEFENDER® surge protector is the only all in one undervoltage and surge power protection device on the HVAC Market