SKU: 18155982556

BEVRLINK 4 Channel Relay and 4 manual test buttons 12V

Sale price$21.87 Regular price$24.30
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Description

BEVRLINK 4 Channel Relay and 4 manual test buttons 12VOverview The BEVRLink relay module is a user friendly solution suitable for users of all levels of experience. With clear documentation and easy setup, this module is perfect for beginners. It features 4 relay channels and 4 voltage free input channels, each equipped with a button for convenient testing. The inputs can be connected without external power, and the module can send interrupts to a manager (e. g., Raspberry Pi) on input change. The

Overview

The BEVRLink relay module is a user-friendly solution suitable for users of all levels of experience. With clear documentation and easy setup, this module is perfect for beginners. It features 4 relay channels and 4 voltage-free input channels, each equipped with a button for convenient testing. The inputs can be connected without external power, and the module can send interrupts to a manager (e.g., Raspberry Pi) on input change. The onboard LEDs indicate relay status for easy monitoring. The BEVRLink relay module offers a standard rail mount bottom case, selectable I2C address, and an optional I2C 4.7K pull-up, making it simple to set up and use. Whether you're a beginner or an experienced user, the BEVRLink relay module is an ideal choice for controlling relays and inputs in your system.

Just connect the button to the input and ground, no extra power is required. Or connect the transistor outputs from sensors and digital switches. A 5V 5mA is flowing out the input connector to sense if there is a short to ground or not, this is called wetting current in the industry.

A button on each input allows for quick and easy test or usage of the inputs in your system.

The 4-Channel Relay Board is a versatile and compact solution for controlling high-power devices from a low-power microcontroller or switch. With 4 high-quality relays, this board can switch up to 5A 250V AC or 5A 30V DC loads, making it suitable for a wide range of applications. The board is powered by a 12V/2A DC Jack power input and features a 12V output connector for powering additional boards or loads.

Relay Features

  • 4 high-quality relays with SPDT-NO, NC contact form
  • Voltage-free inputs that can be triggered by NPN transistors, switches, or relays without external power
  • 12V/2A DC Jack power input (5.5x2.1mm) and a 12V output connector for powering additional boards or loads
  • Onboard LEDs to indicate relay and power status
  • Manager and expansion connector providing 5V/3.3A power and compatibility with Raspberry Pi and additional modules
  • Spring clamp terminal block connectors for easy input and output connections
  • Selectable I2C addresses (0x38-0x3F) and optional 4.7K pull-up
  • Dimensions: 118.87 mm x 72 mm with M3 mounting hole size

Relay Features

  • Each relay uses only 15mA when active and is supplied directly from the power input
  • High-quality relays for reliable performance
  • Suitable for switching loads up to 5A 250V AC or 5A 30V DC

Input features

  • 4 voltage-free inputs for triggering the relays
  • Buttons on each input for quick and easy testing
  • Ability to send interrupts to a manager (e.g., Raspberry Pi) on input change

Specifications

  • Power supply voltage: 12V/2A
  • Relay channels: 4
  • Voltage-free input channels: 4
  • Input wetting current: 5mA (5V)
  • Connector: Spring clamp terminal block
  • Dimension: 118.87 mm x 72 mm
  • Mounting hole size: M3
  • I2C Address: 0x38-0x3F (user selectable)
  • I2C 4.7K optional pull-up
  • 3.3A available for manager (Raspberry Pi) + additional modules

Compatible Accessories

BEVRLink Din Rail clip
(compatible with the case but not directly the board)

BEVRLink 4 Channel Relay Case

BEVRLink Power Supply 12V 2A

Examples and Guides

How To Expand With More Relay Boards & How To Address

How to wire directly between the relay and single board computer/microcontroller


 


Inputs and outputs

 

I2C address selector

Examples of how to get started

Dimensions

Download 3D Model here


Example of applications

  • Home Automation: The 4 Channel Relay Board can be used to control lights, fans, or other appliances in a smart home setup.
  • Industrial Control: The board's high-power relays can be used to control machinery or process equipment in an industrial setting.
  • Robotics: The board can be used to control motors, actuators, or other devices in a robotics system.
  • Lighting Control: The board can be used to switch on/off lights or dim them in stages, making it ideal for lighting control in buildings, hotels, and theaters.
  • Agriculture: The board can be used to control irrigation systems, pumps, or other equipment in agriculture applications.
  • HVAC: The board can be used to control heating, ventilation, and air conditioning systems in commercial or residential buildings.
  • Security Systems: The board can be used to control alarms, cameras, or other security devices in a surveillance system.
  • Laboratory Equipment: The board can be used to control power to various experiments or laboratory equipment.
  • Amusement Rides: The board can be used to control motors, actuators, or other devices in amusement park rides.
  • Medical Equipment: The board can be used to control various devices in medical equipment, such as dialysis machines or patient monitors.

 

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
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
SKU: 18155982556

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Akeem
Birmingham, US
★★★★★ 5
Comfortable and stays cool
Color: White-cooling Basic, Size: Queen(Pack of 1)
Great pillow. When i opened it, i noticed a strange smell, i assumed its the smell of whatever they use to make the pillow stay cool. You have to fluff it for a good amount of time to make sure the cooling agent spreads well in the foam. Is what i assumed atleast. Its a perfect amount of softness for me. Pair it with some bamboo pillow cases and you got a good night of sleep
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Reviewed in the United States on May 9, 2026
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Kim Groetsch
Grantham, US
★★★★★ 5
BEST, MOST COMFORTABLE PILLOWS EVER!
Color: White-cooling Basic, Size: Queen(Pack of 2)
I've used others.BEST PILLOWS EVER! Firm, cooling and supportive. LOVE THESE!
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Reviewed in the United States on May 28, 2026
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Juanita
San Leandro, US
★★★★★ 4
Comfortable and Supportive, but Adjust the Filling
Color: White-cooling Basic, Size: Queen(Pack of 2), Color: White-cooling Basic, Size: Queen(Pack of 2)
I’m very happy with this pillow. The size is big and it feels soft while still providing good support, perfect for midnight scrolling on TikTok. One thing to keep in mind is that it can feel a little too tall if you use all of the filling that comes with it. The good news is that you can easily adjust the amount of filling to find the height that works best for your sleeping position. Once I customized it, it was much more comfortable. Overall, great quality, comfortable, and worth the purchase.
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Reviewed in the United States on June 3, 2026
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Love Leigh Angel
Natrona Heights, US
★★★★★ 5
BEST PILLOWS EVER!!!
Color: White-cooling Basic, Size: Queen(Pack of 2)
I am very picky with my pillows because I have a bad neck and I can never seem to find a good pillow. But I tried this pillow because it had everything I was looking for and the price was great! You get two of them and they are absolutely awesome.! normally I would need to lay on two pillows to try and get comfortable but with these pillows I just lay on one and I wake up with no neck pain. They really have a nice cooling effect. They actually puff up immediately after opening them. All you have to do is just shake them up and the pillow just puffs straight up.. It comes with extra cushioning if you want it to make it firmer and if you don’t want it as firm as it is, you can actually take some out. It really is such a beautiful pillow. It’s perfect in every way to me being such a picky pillow person. You just lay your head down on it and it forms around your neck and your head and when you get up, it goes right back to its normal form. It doesn’t get flat and I love it. I completely recommend this to anyone who is a person who has a hard time finding a really good pillow.
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Reviewed in the United States on April 12, 2026
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Lake Worth, US
★★★★★ 5
Top of the line, best pillows Ive ever had
Color: White-cooling Basic, Size: Queen(Pack of 2)
These pillows are top of the line! I bought them in 2024 and they are still fluffy. When they lose a little fluff, you just punch em around a little bit and voila, like new again. They have kept their shape cery well and do great for cooling. I haven't had to add more filling yet either. I just laid my head on one and thought, I need to do a review cause everytime i lay on these pillows its like clouds. My head is heavy and this is relief :-D
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Reviewed in the United States on May 21, 2026

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