5V 12V 24V Relay Module With Optocoupler Relay Output 1 2 4 6 8 16Way Relay Module For Automation Equipment Control Parameters: _x000D_ There are 4 fixing screw holes around the board, the hole diameter is 3.1mm, which is convenient for installation and fixing. _x000D_ The relay uses high quality Songle relay, single pole double throw. a common end, a normally open end, and a normally closed end. _x000D_ Optocoupler isolation, good anti-interference. _x000D_ Low level pull-in, high level release. The status indicator is on when the inverter is closed, and the status indicator is off when released. _x000D_ VCC is the system power supply, and JD_VCC is the relay power supply. _x000D_ Electrical parameters: _x000D_ Supply voltage: DC 5V/12V/24V _x000D_ Current: greater than 100mA _x000D_ Load: 250V 10A AC or 30V 10A DC _x000D_ Wiring instructions: _x000D_ VCC: system power supply positive _x000D_ GND: system power supply negative _x000D_ IN1--IN2: Relay Control Por _x000D_ _x000D_ _x000D_ _x000D_ _x000D_