What it is
The ShillehTek 4-Channel 24V Relay Module for Arduino & Raspberry Pi is a multi-output switching board that lets your code control up to four devices independently, while the relay side is powered from a 24V supply. Each relay acts like an electronically controlled on/off switch for automation panels, control boxes, and test setups where 24V is already standard.
Pins
Pin names can vary by module revision. Refer to the silkscreen labels on the board/module and the listing photos for exact pin names, then match them to your Arduino or Raspberry Pi GPIO wiring (inputs for each relay channel plus power connections for the 24V relay side).
Technical Specifications
| Specification | Value |
|---|---|
| Channels | 4 (independent on/off switching) |
| Relay-side supply | 24V supply (as described) |
| Controller compatibility | Arduino, Raspberry Pi (GPIO control) |
| Typical uses | Automation panels, control boxes, test setups |
| Pinout / terminal labeling | See listing photos and board silkscreen |
Frequently Asked Questions
How do I power a 24V relay module when using an Arduino or Raspberry Pi?
This module is described as having the relay side powered from a 24V supply. Use a suitable 24V power source for the relay power input, and follow the board silkscreen/listing photos for the exact power terminal labels.
Can a Raspberry Pi control a 4-channel relay module for automation projects?
Yes—this relay module is intended for Arduino or Raspberry Pi control so you can toggle up to four outputs independently for control boxes, test setups, and automation panels.
Where can I find the pinout for the ShillehTek 4-Channel 24V Relay Module?
Use the board’s printed silkscreen labels and the product listing photos to confirm the exact pin names and connector layout, since labeling can vary by revision.
What can I switch with a 4-channel 24V relay board?
Each channel works like an electronically controlled on/off switch for a connected load, making it useful for multi-output switching in industrial-style 24V systems. Check the relay markings and your load requirements before wiring.