Elkay Power Factor Capacitor The Elkay capacitor is designed to help in the switching of Elkay switches with low voltage and low wattage loads. Small making it easy to integrate into any project. Ideal for use with 2 wire and three wire Elkay switches. Features and Benefits Easy wiring instructions Suitable for all load types at 240 V Lighting Controllers When body heat is detected, the load is switched on. At a preset time after movement has ceased the load is automatically switched off. Available for standard lighting or electrical appliance applications.