The Enphase Envoy Communications Gateway is a networking hub that allows homeowners to monitor and control their solar energy system. It communicates with up to 500 microinverters using power line communications. Homeowners can check the system status using the Envoy's LCD display or get more detailed performance data through Enphase's online monitoring software. The Envoy has automatic updates, reliable 24/7 monitoring, and advanced data storage capabilities.