... , DDS48 type electronic single phase energy meterApplication : DDS877 , DDS48 type electronic single phase energy meter is the most advanced static electronic meter in China. The meter designs use ... tamper. It adopts the optocoupler output signals, and used for directing the energy with the power line carrier light-emitting diodes, and ... 10(40),15(60),20(80),30(100) single phase electronic energy meter