Electromagnetic Canceller REM8
Features: Power supply voltage: 3-5V, or 2-4 AA batteries in series Size: 72mm*64mm Price: US$125 Free shipping (UPS) The wholesale price starts from 10 sets, and the size of the circuit board can be customized. Email:42451193@qq.com dongerwei1984@gmail.com Principal and Structure: Strong electromagnetic waves emanate from power supply transformers inside of audio equipment. They have a …