What it is
The ShillehTek 8-Channel 24V Relay Module for Arduino Raspberry Pi Control is a multi-output switching board that lets your Arduino or Raspberry Pi toggle up to eight devices independently. It powers the relay side from a 24V supply, making it a practical fit for industrial-style automation panels, test rigs, and control boxes where 24V is already standard.
Pins
Pin names and terminal labels can vary by revision. For an accurate pinout, refer to the silkscreen labels on the PCB and the listing photos (input/control pins for each channel, plus power and load terminals per relay).
Technical Specifications
| Item | Details |
|---|---|
| Product type | Relay module (multi-channel on/off switching) |
| Number of channels | 8 |
| Relay-side supply | 24V (as described) |
| Controller compatibility | Arduino, Raspberry Pi (trigger/control signals) |
| Use cases | Automation panels, control boxes, test rigs |
| Exact pin names / layout | See listing photos / silkscreen labels |
Frequently Asked Questions
How do I use an 8-channel 24V relay module with Arduino?
Power the relay side from a 24V supply, then connect your Arduino output pins to the module’s channel input pins as labeled on the PCB. Your sketch can switch each relay on/off like a digital output controlling an electrically isolated switch.
Can a Raspberry Pi control this 24V relay board?
Yes—Raspberry Pi GPIO can be used as the trigger/control signals for the relay inputs. Use the board’s silkscreen labels and listing photos to match each GPIO to the correct channel input.
Does this relay module require a separate 24V power supply?
The relay side is designed to be powered from a 24V supply (as described). Your controller (Arduino/Raspberry Pi) typically provides only the control signals, not the relay power.
What loads can I switch with each relay channel?
Each channel acts like an electrically controlled on/off switch for a connected load. For safe limits and wiring method, follow the relay markings on the board and your load’s requirements, and verify in the listing photos or manufacturer markings.