Relay 4 Zero - 4 Channel 3V Relay Board for Raspberry Pi

Relay 4 Zero - 4 Channel 3V Relay Board for Raspberry Pi

Marsoni

M251S

$14.00

Get it in 3 business days with 1 day shipping. Friday, May 29

Relay 4 Zero - 4 Channel 3V Relay Board for Raspberry PiRelay 4 Zero is a 4 channel relay shield with 120 V 2A AC output and 24 V 2A DC output ratings. Relay 4 Zero is designed for triggering at low voltage levels. Relay 4 Zero provides a solution for controlling low and medium current voltage devices and makes your projects intelligent. It could be a nice solution for controlling devices that could not be directly controlled by RPi's Digital I Os. The standardized shield form factor enables a smooth

Easy Shipping

Quick Dispatch:

Your Relay 4 Zero - 4 Channel 3V Relay Board for Raspberry Pi orders ship within 1-2 business days.

Delivery Options:

Standard: 3-7 business days
Fast: 2-3 business days
Express: 1-2 business days

Order Tracking:

You'll receive a tracking link by email once your Relay 4 Zero - 4 Channel 3V Relay Board for Raspberry Pi ships.

Need Help?
Questions about Relay 4 Zero - 4 Channel 3V Relay Board for Raspberry Pi, sizing, or delivery? We're just an email away.

Live Shipping Estimates:
Enter your location at checkout to see available shipping methods and costs for Relay 4 Zero - 4 Channel 3V Relay Board for Raspberry Pi in your area.

Get Shipping Estimates

Country Zip/Postal Code

Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
Final sale items are not eligible for returns or exchanges.
To process your return/exchange, please contact us at [email protected]
Please click here for more details>>> Return & Exchange Policy

I rely on these nightly to combat dry mouth, and they deliver exactly what is promised. The adhesion mechanism is impressive—once placed against the gum, the disc stays securely anchored for a full 6–8 hours without shifting, allowing me to sleep without interruption. The profile is ideal; the discs are incredibly slim and unobtrusive, so you don't feel like you have a bulky object in your mouth while trying to fall asleep. Despite being so compact, they pack enough moisture to last until morning. The Berry flavor is mild and soothing, making it a perfect bedside companion. Highly recommended.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on February 11, 2026