What it is
The ShillehTek 4-Channel 5V Relay Module for Arduino & Raspberry Pi Board lets a 5V control system switch up to four loads independently—like four GPIO-controlled on/off switches on one board—ideal for multi-zone lighting, pumps, fans, solenoids, small automation panels, and quick test setups.
Pins
Pin names and terminal labels can vary by relay module revision. Refer to the silkscreen labels on the board/module and the listing photos for exact pin names and the relay channel order before wiring (especially when following an Arduino or Raspberry Pi pinout tutorial).
Technical Specifications
| Item | Details |
|---|---|
| Module type | 4-channel relay module |
| Control system voltage | 5V control (for Arduino / Raspberry Pi use) |
| Number of independently controlled outputs | 4 |
| Typical applications | Multi-zone lighting, pumps, fans, solenoids, small automation panels, test setups |
| Pinout / terminal labeling | See listing photos and board silkscreen (varies by module revision) |
Frequently Asked Questions
How do I use a 4-channel 5V relay module with an Arduino?
Connect the module to your 5V control system and drive each relay channel from separate GPIO pins. Always confirm the exact input pin labels on the module silkscreen and the listing photos before wiring.
Can I control four devices independently with this relay board?
Yes. It’s designed to act like four independent on/off switches controlled by GPIO, which is useful for multi-zone lighting, pumps, fans, or solenoids.
Does this relay module work with Raspberry Pi GPIO?
It’s intended for Arduino or Raspberry Pi projects as a GPIO-controlled switching module. Check the board’s silkscreen and listing photos for the exact pin naming and connection method used on your revision.
Where can I find the pinout or datasheet for this 4-channel relay module?
Use the module’s silkscreen labels and the product listing photos as the primary reference for pin names and channel order. If you’re following a wiring tutorial, match it to your board revision before powering anything.