Product details This is a compact single-channel relay board that uses a 12 V DC supply and does not include optocoupler isolation. The control logic interface is directly connected (or via transistor driver) to the relay coil circuit. It is designed to switch one external load—such as a lamp, motor, or other appliance—up to 10 A (AC or DC) using a control signal at 12 V. The module features screw-terminal connectors (Common / Normally Open / Normally Closed), a status LED to show relay activation, and header pins for VCC, GND, and input trigger. Because there’s no opto-isolation, it is simpler and cheaper, but offers less protection from electrical noise, spikes or ground-loop issues—so best used in low-noise environments or where you can ensure safe wiring.
