8-channel width voltage relay module has eight normally open and normally closed contacts, relay can directly control various devices and load; + 5V: 5V power supply cathode; GND: the cathode of the power supply. 7-30V: 7-30V power supply positive; IN1-IN8: signal trigger, high level of effective (1.5-30V); relay output: there are 24 interfaces, all the interfaces can be directly connected to the user to facilitate the use of. Power supply range: DC5-30V, current: greater than 500mA, relay trigger current: greater than 3mA, load: 10A 250V AC or 10A 30V DC, finished product through 100% functional test and stability test.

Great for DIY project.