This is a "standard" 4 channel relayboard that should be powerd with 5V or 12V depending on what variant you choose.
The input pins should be pulled low to activate the relay
- Low cost way to control larger voltages and currents.
- Supplied assembled
- On-board switching transistors.
- On-board back EMF protections.
- On-board LED-indicator for power
- On-board LED-indicators for each channel
- 10 amp 250v rated relay. The board is not tested to be used with mains voltages!