... good reliability, small volume, light weight, specious nice appearance, convenient installation, etc.Functions and features. Portable socket installed, the cover, the ... .. Plug and socket can turn right 90°, and make installation and using conveniently.. The plug can fit for all kinds ... hole and two grounding strip (Product Configuration code is ZB).. 5+1 digits display (99999.1kWh) by step motor type ...