Is your refrigerator, freezer, or AC unit not starting or clicking on and off? The issue might be the relay and overload starter. This is a genuine Sealed Unit Parts RO41 replacement component. It's the exact part specified by many manufacturers for various compressor models. This hard-working little device helps start the compressor motor and protects it from overheating. Installing a new, genuine RO41 can often bring your appliance back to life without the cost of a full service call. Please note: Appliance repair involves electricity and refrigerant. If you're not 100% comfortable and qualified, please contact a professional technician. For the savvy DIYer with the right skills, this is the official part you need.