AC voltage max. 250V, AC current max. 10A;
DC voltage max. 30V, DC current max. 10A;
Uses 8550 triode drive, strong drive ability;
Working voltage: 5V;
Module built-in green LED power indicator and red LED indicates relay status;
VCC: 5V input, external connect to GND;
IN1, IN2, IN3, IN4 Control ports, connect to I/O port;
Great for DIY project.