12V Relay Module with Opto Isolated inputs 8Channel If you want to switch up to 8 high current / high voltage loads from a micro-controller, this 5V relay board can do it. It contains 8 x 12V relays rated at 10A/250V AC (DC 30V/10A). Each relay is switched on/off by an opto-isolated digital input that can be connected directly to a microcontroller output pin. It only requires a voltage