GE Z-Wave Plus Direct Wire 40 Amp Smart Switch, Indoor/Outdoor, 120-277V Lighting Appliance Control, Repeater/Range Extender, Zwave Hub Required-Works with SmartThings, Wink, and Alexa, 14285, White ALEXA COMPATIBLE - REQUIRES AN ALEXA SUPPORTED HUB for voice control with Echo Products (Alexa device and hub sold separately). CANNOT connect directly with ECHO PLUS (Only ZigBee products can connect directly to Echo Plus). Requires a Z-Wave certified gateway. Compatible with the following Z-Wave certified Hubs: SmartThings, Wink, ADT Pulse, Trane, Vivint, Nexia, Honeywell, HomeSeer, Harmony Home Hub Extender, Vera, Connect, Fibaro and Iris. Works with Alexa for voice control (hub required; Alexa device and hub sold separately) Remotely controls the ON/OFF functions of water heaters, landscape lighting, spas, pool pumps, heaters and other large load devices  up to 11,000 watts (277v). Energy monitoring capability allows remote monitoring of watt- and kilowatt hours. Lockable, tamper-resistant metal case keeps out dirt/debris and keeps settings and wiring secure. Weather-resistant, rugged designed housing suitable for use outdoors in damp or wet conditions. Z-Wave S2 Security and Smartstart supported with compatible gateways. S2 Security virtually eliminates the risk of devices being hacked while being included in your network (does not impact interoperability with older Z-Wave products). Using Smartstart with compatible gateways makes the installation process simple and trouble-free eliminating the confusion and unpredictability of device installation.