Monitors and controls up to 600 microinverters, and includes lifetime access to Enphase Enlighten web-based analysis software. Connects to internet using either Wi-Fi, Cat5 Ethernet, or cellular modem (EN-CELLMODEM-01). May be connected to a router using optional Enphase Powerline Communication Bridge Pair (EN-EPLC-01). Enclosure is IP30 indoor rated, outdoor installation requires a suitable NEMA 3R enclosure. Powered by 120VAC, may be cord-connected to standard outlet, or hardwired to 15A breaker (Hardwiring requires Envoy to be mounted inside non-metallic enclosure -not supplied). Comes with a 5-year warranty.