8 channel DC 12V relay module /computer USB control

1 square onboard USB interface for connection stability
2 the use of imported high-performance USB controller chip
3 Use the special relay driver chip ULN2803, relay work more stable
4 Using genuine Single relay
5 military grade PCB board production
6 board power outlets and terminals, two kinds of access to power is flexible. After connecting the power, even if the computer off or unplug the USB from the computer, the relay can also remain set.
7. PCB size: 96.8mm * 72.2mm
8 fixing holes size: 3mm, fixing hole central moments: 92.7mm * 68mm