The Insteon 220V / 240V 30 AMP Load Controller Normally Open Relay (Dual-Band) lets you efficiently control the use of heavy duty appliances and take a step towards saving energy and cutting down on utility costs. It allows you to use other Insteon devices to remotely control appliances that run on higher voltage, up to 30 Amps in a normally open state. You can also use the local "Set" button to toggle the attached load on and off. The relay comes with pre-configured wires and mounting hardware. There is no need to open the box for installation, simply identify the labeled wires and connect one set to your breaker panel and the other set to the high current appliance. This switch also uses Insteon Dual-Band technology, which sends and receives Insteon powerline and wireless radio frequency (RF) signals. This allows it to work as a phase bridge for superior signal reliability and as an access point for Insteon RF and battery powered devices.