The RCO810 Refrigerator 3-in-1 Hard Start Kit Relay Capacitor is a versatile start relay designed for built-in installation in refrigerators and freezers. With a multicolor design and compatibility with various brands and models, this kit includes everything needed for easy installation. Suitable for use in compressors, this start relay is a reliable replacement for HS810, RC100, ERP810, TJ90RCO810, AP4503019, and RCO810 models, ensuring your appliance starts smoothly and efficiently.