Onyehn 2pcs 8 Channel DC 5V Relay Module with Optocoupler for arduino UNO R3 MEGA 2560 1280 PIC AVR DSP ARM STM32 Raspberry Pi

Description : 1.the module complies with international safety standards , the load control area and regional isolation tank 2.using double-sided FR-4 circuit board design, high-end chip production process 3.working status indicator lights are conducive to the safe use. 4.Support all single-chip microcomputer,control Industrial circle,PLC controller,Household intelligent control 5.8 and 8 normally open normally closed contact 6.blue KF301 terminals to the control line is more convenient. 7.Module size : 138m * 56mm * 19.3mm ( L * W * H ) , Weight : 120g Two module interface : 1.VCC: 5V power supply connected to the positive 2.GND: 5V power supply connected to the negative 3.IN1-IN8: trigger signal , active low Relay outputs : a 12- line interface, the interface can be directly connected to all leads , user-friendly 4.NO1 - NO8: normally open relay interfaces , relay before the vacant after the pull shorted with COM 5.COM1 - COM8 Relay Common Interface 6.NC1 - NC8: normally closed relay interface relay shorted with COM ago , after the pull- vacant Package included: 2 x 8 Channel Relay Module