1. This item is a 5V 8-Channel Relay interface board,It can be controlled directly by a wide range of microcontrollers such as for Arduino, AVR, PIC, ARM and so on.
2. 8-Channel Relay interface board.
3. Each one needs 15-20mA Driver Current.
4. Equiped with high-current relay : DC30V 10A AC250V 10A.
5. Each relay has normally open and normally closed contact.
6. The 8 channels are optically isolated, safe, reliable, anti-interference.
7. Can be selected by jumper relay and TTL or ground.
8. With power indicator,8-way road has a status indicator.
9. With a relay coil to absorb the diode protection.
10. The circuit board size 140mm X 55mm
11. Mounting hole size 133mm X 40mm