What it is
The ShillehTek 2-Channel 24V Relay Module Arduino Raspberry Pi Relay Board lets an Arduino or Raspberry Pi toggle two separate on/off loads independently, while powering the relay side from a 24V supply—useful for automation projects, control boxes, and industrial-style test setups.
Pins
Pin names and terminal labels can vary by module revision. For the exact relay board pinout, refer to the silkscreen labels on your board and the listing photos; connect your controller (Arduino/Raspberry Pi GPIO) to the control inputs, and connect your 24V supply to the relay power input as marked.
Technical Specifications
| Item | Value |
|---|---|
| Product type | 2-channel relay module / relay board |
| Number of channels | 2 |
| Relay-side supply | 24V (as described) |
| Controller compatibility | Arduino / Raspberry Pi (control side; see listing photos) |
| Pinout / terminal labeling | See listing photos and board silkscreen |
Frequently Asked Questions
How do I wire a 2-channel 24V relay module to an Arduino?
Connect the Arduino control pins to the module input pins shown on the board silkscreen, and power the relay side from a 24V supply as marked. Then toggle the inputs in code to switch each channel on/off independently.
Can I use this 24V relay board with a Raspberry Pi?
Yes—it's designed to be controlled by a Raspberry Pi or Arduino to switch two devices. Use the board’s labeled input pins for GPIO control and follow the markings for the 24V relay-side power connection.
What does “2-channel relay module” mean?
It means you get two independent relay outputs on one board, so your project can switch two separate loads without using two separate relay modules. Each channel works like an electronically controlled on/off switch.
Where can I find the pinout or datasheet for this relay module?
Use the silkscreen labels printed on your board and the listing photos for the exact pin names and terminal layout, since labeling can vary by revision. If you need matching wiring diagrams, search your board’s relay model/markings shown on the relays themselves.