4 Channel Optically Isolated Relay Card 12VDC

Will accept an active HI or an active LO from your microcontroller.

Each input is selectable using the jumpers located on the board.

4 x 12 volt relay card with opto isolators and screw terminals

Use this relay board with your Arduino, Raspberry Pi or your custom micro-controller projects!

• Each Relay has LED indication when ON
• SPDT Relays with terminal block outputs.
• Relay Coil voltage: 12 VDC
• Power Requirement: 12 VDC

The board has 4 jumpers on the left hand side.

The card can be made to operate in inverted or non inverted mode.

Apply 12 volts DC to the location labeled DC+ and DC-

If the jumpers are located toward the edge of the PCB then the relays are not inverted, so a logic 1 turns them ON

If the jumpers are set to the rear of the bard, they need a logic 0 to turn ON.