Micasa Verde Inc SMARTSWITCH Smartswitch Z-Wave Appliance Switch See how much energy your individual devices are using, so you know where the biggest saving potential is. Turn off any device while at home or away to cut energy costs. An unobtrusive small form factor so the SmartSwitch will not block other nearby outlets. Optimized antenna range of up to 100 feet for expansive installations. Currently, only offered in US Z-Wave frequency with a 3 prong US plug. Certified for use in the USA (FCC, CE, ROHS, C-TICK) (120V 60Hz input, 1875W or 15A maximum output)