ITEM NAME:1/2/4/8 Channel 5V Relay Board Module For Raspberry Pi DSP AVR ARM E2T5 PIC J5O7 Description&Preview.The relay (as shorted to GND) does not operate. The input is directly connected to the IO port or digital circuit of the single chip microcomputer, and the input high level relay is pulled in, and the input low level relay is released;.
