Solatel PWX Power Expanders let you control more devices without tripping circuit breakers. A typical plug-in controller, such as Solatel's Plant Pro, is limited in the current that can be drawn from it because of the 15 Amp rating of the typical 120V outlet. This allows control of only a single 1000 watt lamp. Adding a Power Expander allows control of additional lamps, pumps, fans, or other devices. Multiple Power Expanders can be used to control a large number of devices. A Power Expander has two cords and 2 or 6 outlets (depending on model). The Power Cord is connected to the appropriate voltage source (120V or 240V, depending on model). This provides current to all of the outlets.