Electronic Watt hour meter

1) Single Phase : 1P2W 40(10A), 80(20A), 120(30A), 220V, 50/60Hz, (Standard, Pulse, Remote inspection type) Three phase : 3P4W 40(10A), 120(30A), 220V, 50/60Hz, (Standard, Pulse, Remote inspection type) 2) Accuracy : 1.0 class 3) Communication : RS-485 type (For only remote inspection type) 4) Adjustable modem (External type) 5) Data storing by inner battery .(Remote inspection type, multi function type)