This 12 V 6 way / road (with light coupling) relay module meets the safety standard because the control areas and the load area have the insulation groove. Optical coupling isolation module.
The triggering of the 6-channel / channel relay module is reliable, more stable. The FR - 4 dual circuit board design, high-end SMT process. It has power and relay operation instructions. The relay terminals (C, NC, NO) are accessible via screw terminals, which facilitates wiring of the board.
The inputs of the 8-channel 12 V relay module are isolated to protect any delicate control circuit.
A wide range of microcontrollers such as Arduino, AVR, PIC, ARM, etc. can control it.
The use of such a high voltage relay eliminates the risk of overheating of the relay because the electromechanical relay limits the current consumption according to a nominal voltage.