Single phase electronic kwh meter Main features: Active e. C measure mode is optional. Lcd display format is optional. Tamper function(option): 1p2w 1p1w Cover open alarm(option): meter cover or terminal cover Communication port (option): optical port or rs485 Terminal cover: short or long (transparent) One or two rates controlled by external device (option). Ip53 in accordance with iec60529: 198 Sea transportation standard packing