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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I thought I knew everything about cats, but when my 14 year old cat stopped using the litter box, I could not fix it. I did persuade her to start using puppy pads but the problem was she would pee toward the edge and it always got on the floor. Or, defying everything I know about reality, she would find a way to pee UNDER the puppy pad. I asked ChatGPT for advice and it recommended these. They fixed the problem by 80% and I'll take it! These mats help a ton. She still gets some pee on the floor, but it's not the huge problem it used to be. The edge on the mat keeps it contained. And enzymatic cleaner works its magic on the floor. The clips that go on the edges are kinda fragile, but that's why they give you extras.
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Reviewed in the United States on February 10, 2026
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Ilein
Birmingham, US
★★★★★ 1
Not Leak Proof
Size: X-Large: 28" x 34"
horrible do not buy! leaks threw and caused a permanent stain and smell. thought it was good but after a week i noticed the smell and lifted up the mat there was complete pee under.
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Reviewed in the United States on April 12, 2026
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Jarett
Charlottesville, US
★★★★★ 5
Great investment
Size: Small: 24" x 24"
It catches the pee that runs off the pad, great investment!!
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Reviewed in the United States on February 12, 2026
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Karen
Cuba, US
★★★★★ 2
It doesn’t stop leaks from the pee pad.
Size: X-Large: 28" x 34"
I’m trying to figure out how not to have leaks occasionally. I’m going to call the company to see if there’s something I should be doing.
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Reviewed in the United States on January 3, 2026
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Michael Holbrook
Grantham, US
★★★★★ 5
Training pad holder literally rises above the competition
Size: 24"X24"
We have been through a variety of potty pad products during our housetraining journey with our Havanese pup. The Petphabet training pad holder has been the best by far and has ended our search for a number of reasons: Pros: 1. Grid design keeps puppy from chewing/tearing/destroying/eating the potty pad. 2. Size is perfect for our pup even as he is getting bigger (15 lbs) - mileage may vary for larger pups/dogs. 3. HERE IS THE REASON THIS PAD HOLDER STANDS OUT AMONG THE COMPETITION - The top grid is elevated off the surface layer where the pad lays, which allows an air gap between the standing surface and the potty pad. This allows the urine to fall to the pad without pooling and without your pup stepping in it and tracking it everywhere! Cons/Areas for improvement: 1. We like blue but it's not for everyone! 2. The "posts" holding the mesh up from the base carry all of the weight of the dog and in some cases jumping or playing on the pad holder can cause the edges of the posts to cut through the potty pad liner, causing a (minor) leak. I would recommend the manufacturer design any subsequent models with larger, flat surfaces on the post supports. 3. The 4 piece design means the base is not solid but has a split down the middle that is not waterproof. This can be remedied by caulking the 2 sides of the base together with clear silicone assuming you will no longer need to disassemble the unit. 4. Poo can get caught in the grid if your pup has loose stool. If not removed quickly your pup may step on it and really pack it in there. After many trials with other products, we are very happy with this training pad holder and have bought a total of 3 units for different areas of our house. I highly recommend for small dogs/pups!
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Reviewed in the United States on August 28, 2023

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