5V 12V 24V Relay Module with Optocoupler Relay Output 1 2 4 6 8 16Way Relay Module for Arduino PLC Automation Equipment Control

Parameters:
There are 4 fixing screw holes around the board, the hole diameter is 3.1mm, which is convenient for installation and fixing.
The relay uses high quality Songle relay, single pole double throw. a common end, a normally open end, and a normally closed end.
Optocoupler isolation, good anti-interference.
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.
VCC is the system power supply, and JD_VCC is the relay power supply.
Electrical parameters: