... meter socket Safety Power-saving Meter Universal Socket, new Power Meter socket,energy meter,new arrival power energy meter,LCD power meter,LED energy meter,easy operation meter ... socket:< 2000 W4. Working frequency:47 HZ ac ~ 65 HZ ac5. The measurement precision:1 level6. Data refresh ... .5 VAEnvironmental requirements: 1,Operating temperature:-20°C~+65°C;2,Atmospheric pressure:80kPa ~110kPa;3,Relative ...