If you want to switch up to 8 high current / high voltage loads from a microcontroller, this 12V 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 of approx 1.0V to switch the inputs on but can handle input voltages up to 12V. This makes it ideal for both 5V and 3.3V devices.
Board Size: 14cm x 5.0cm
Features
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 of approx 1.0V to switch the inputs on but can handle input voltages up to 12V. This makes it ideal for both 5V and 3.3V devices.
Board Size: 14cm x 5.0cm
Features
- 8x 12V relays
- Each relay rated at 10A / 250V
- Each relay consumes approx 30mA when switched on (at 12V)
- Power supply 5V
- Fully Opto-isolated input signals
- Input signals from 1.0V to 12V
- Individual indicator LEDS for each relay
- Power On LED indicator
- Isolated Input GND
- 4x mounting holes
Connection
Power Supply
A supply voltage of 12V should be connected to the VCC and GND pins. This is used to power the relay coils when they are switched on. A power Indicator LED indicates power is supplied.
DO NOT apply power the wrong way round.?This can seriously damage the components on the board
Input Signals
Opto-isolated input signals should be supplied between the COM pin (signal GND) and each input pin. There is a shorting link which links the signal ground to the power ground. If you want full isolation for your microcontroller from potentially noisy relays, this link can be removed.
Documents
Relay Datasheet
