What it is
The ShillehTek 8-Channel 12V Relay Module for Arduino Raspberry Pi is an 8-output relay board that lets your code switch up to eight loads independently—ideal for robotics cabinets, DIY control boxes, lighting zones, pumps, and valve control in multi-channel automation panels and test rigs.
Pins
Because pin names and header layout can vary by board revision, refer to the silkscreen labels on the relay module and the listing photos for the exact pinout. In general, you’ll have relay power input for the 12V rail and separate trigger inputs from your Arduino or Raspberry Pi GPIO, plus a ground reference as required by your setup.
Technical Specifications
| Specification | Value |
|---|---|
| Channels | 8 |
| Relay module supply | 12V (relay power rail) |
| Controller compatibility | Arduino, Raspberry Pi (GPIO trigger signals) |
| Pinout / header labels | See listing photos / board silkscreen |
| Use cases | Multi-output switching for automation panels and test rigs |
Frequently Asked Questions
How do I power a 12V 8-channel relay module with Arduino or Raspberry Pi?
Use a suitable 12V supply for the relay board’s power input, then use your Arduino/Raspberry Pi GPIO as the trigger signals. Verify the exact power and input pins using the silkscreen labels and listing photos.
Can a Raspberry Pi GPIO control this 12V relay board?
Yes—this module is intended for GPIO trigger control while the relays themselves are powered from a 12V rail. Match the trigger wiring to the board labels and your Pi’s GPIO wiring practices.
What can I switch with an 8-channel relay module?
It’s commonly used to switch multiple independent loads in projects like lighting zones, pumps, valves, robotics cabinets, and DIY control boxes. Always choose relays and wiring appropriate for your load type and follow safe electrical practices.
Do I need a separate power supply for the relays?
Typically, yes: the relays use a 12V power rail, while your controller provides only the control/trigger signals. This is useful when your enclosure already includes a 12V supply for actuators or control hardware.