ITEM NAME:5Pcs 12V 1 Channel Relay Module Optocouple Board Shield for PIC AVR DSP ARM #gib Store Home Promotion Hot Item Add to Fav.With power and relay action indication, bright when connect and go off when disconnects. VCC: Power interface, 12V. 5 x One Channel 12V Relay Module Shield. When there is a signal in signal input, public side and common side will breakover.
