INSTALLS IN CIRCUIT PANEL of most homes with clamp-on sensors. Supports single-phase up to 240VAC line-neutral; single, split-phase 120/240VAC; and three-phase up to 415Y/240VAC (no Delta). Panels with access only to busbars will need flexible sensors available from Emporia Energy. 24/7 ENERGY MONITORING: Monitor your home's real power anywhere, anytime to prevent costly repairs, conserve energy, and save costs. Monitor solar / net metering. PROTECTED BY A 1-YEAR WARRANTY. LOWER YOUR ELECTRIC BILL: Gauge real-time spending and get actionable notifications to understand where you can save costs. REAL-TIME ENERGY DATA: REQUIRES 2.4 GHz WIFI WITH AN INTERNET CONNECTION to monitor energy use with iPhone / Android / Web app. Vue sensors collect energy data and are accurate from ±2%. The Vue is UL and CE Listed for your safety. 1 second data is only available in the app (when actively open) and retained 3 hours. Minute and hour data are retained in the cloud. 1 minute data is retained 7 days, 1 hour data is retained indefinitely. Export cloud data whenever you want in the app. APPLIANCE MONITORING WITHOUT GUESSWORK: Comes with sixteen 50A sensors to accurately monitor your air conditioner, furnace, water heater, washer, dryer, range, etc. directly from a 15A or 20A breaker