1,The photoelectric isolation switch is used to isolate the voltage acquisition of each channel completely;
2,The 16-choice 1 analog switch is used to ensure that only one channel is switched on in unit time and not affected by ground difference;
3,Overvoltage protection with maximum withstand voltage of 1000V;
4,Single station supports 32-channel voltage detection at the same time;
5,Adopting 24-bit high-precision ADC imported acquisition chip。