---
product_id: 236259467
title: "GeeekPi Expansion Board 4 Channel Relay Module for Raspberry Pi 3/2 B, 3 Model B+ & 4 Model B (No Programming Required/Programmable)"
brand: "geeekpi"
price: "$8043"
currency: COP
in_stock: false
url: https://www.desertcart.co/products/236259467-geeekpi-expansion-board-4-channel-relay-module-for-raspberry-pi
store_origin: CO
region: Colombia
---

# 4 high-speed relay channels DIP switch for unique I2C addressing Stackable multi-module support GeeekPi Expansion Board 4 Channel Relay Module for Raspberry Pi 3/2 B, 3 Model B+ & 4 Model B (No Programming Required/Programmable)

**Brand:** geeekpi
**Price:** $8043
**Availability:** ❌ Out of Stock

## Summary

> ⚡ Power up your smart home game with GeeekPi’s 4-channel relay—control, customize, conquer!

## Quick Answers

- **What is this?** GeeekPi Expansion Board 4 Channel Relay Module for Raspberry Pi 3/2 B, 3 Model B+ & 4 Model B (No Programming Required/Programmable) by geeekpi
- **How much does it cost?** $8043 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.co](https://www.desertcart.co/products/236259467-geeekpi-expansion-board-4-channel-relay-module-for-raspberry-pi)

## Best For

- geeekpi enthusiasts

## Why This Product

- Trusted geeekpi brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Plug & Play Installation:** Designed for quick setup with included mounting hardware—get your smart home project live in minutes.
- • **Multilingual & Programmable:** Supports shell access and multiple programming languages, empowering you to tailor your automation exactly how you want.
- • **Rapid Response Relay Channels:** Experience lightning-fast switching speeds that keep your automation projects running smoothly and reliably.
- • **Seamless Smart Home Integration:** Effortlessly control 4 devices with your Raspberry Pi—no programming needed or dive into code for full customization.
- • **Precision Addressing with DIP Switch:** Avoid address conflicts by easily toggling I2C addresses, ensuring flawless multi-module setups.

## Overview

The GeeekPi 4 Channel Relay Module is a compact, stackable expansion board designed for Raspberry Pi models 2, 3, and 4. Featuring four high-speed relays, DIP switch-configurable I2C addresses, and easy plug-and-play installation, it enables both no-code and programmable smart home automation with reliable multi-module support.

## Description

Description 4 Channel Relay Hat Board For Raspberry Pi is one of the "docker pi" module.It has 4 channel relay that you can put it on your smart home project. This four-channel relay uses high-quality relay modules combined with the most popular microcontroller technology to communicate with the Raspberry Pi. You can use multiple modules stacked together for use, even you can stack up to four layers. Switch the I2C address of the device through the DIP switch on the circuit board to ensure that the four-layer module gets different addresses, thus avoiding the problem of address duplication. The module is very fast, easy to install, and supports multi-language development, making it ideal for smart home projects. PS: The 4pin pin is a backup that supplies power to future products. You can ignore those pins. Please do not connect any device to that pins. Package includes: 1 x 4 channel relay hat board. 4 x M2.5x16 copper sticks. 8 x M2.5 x 12 screws. 1 x instructions.

## Features

- The 4-channel relay cap board for Raspberry Pi is part of the "docker pi" module. It has a 4-channel relay that you can add to your smart home project.Can be accessed programmatically or directly by shell. It also uses high-quality relay modules combined with the most common microcontroller technology to communicate with the Raspberry Pi.
- Can be accessed programmatically or directly by shell.Switch the I2C address of the device using the DIP switch located on the PCB to ensure that the four-layer module gets different addresses, thus avoiding the problem of address duplication.
- The relay module is very fast, easy to install and supports multilingual development, making it ideal for smart home projects. It supports multiple modules stacked for use.
- WIKI: https://wiki.52pi.com/index.php/4_Channel_Relay_Hat_Board_For_Raspberry_Pi_SKU:_EP-0099
- Package includes: 1 x 4-channel relay cap panel, 4 x M2.5 x 16 copper stick, 8 x M2.5 x 12 screws, 1 x instructions

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | GeeekPi |
| Package Dimensions | 10.69 x 8.1 x 3.1 cm; 59 g |
| Manufacturer reference | EP-0099 |
| Manufacturer | GeeekPi |
| Series | Raspberry Pi 4 Model B |
| Form Factor | Stick |
| Processor Brand | ARM |
| Processor Count | 1 |
| Memory Technology | LPDDR2, LPDDR4 |
| Wireless Type | Infrared |
| Operating System | Raspberry Pi OS (ehemals Raspbian) |
| Are Batteries Included | No |
| Item Weight | 59 g |
| Guaranteed software updates until | unknown |

## Product Details

- **Brand:** GeeekPi
- **Model name:** Raspberry Pi 4 Model B
- **Connectivity technology:** I2C, Infrared
- **Included components:** 1x 4 Channel Relay Hat Board, 4x M2.5x16 copper stick, 8x M2.5x12 screws, 1x Instructions
- **Operating system:** Raspberry Pi OS (ehemals Raspbian)

## Images

![GeeekPi Expansion Board 4 Channel Relay Module for Raspberry Pi 3/2 B, 3 Model B+ & 4 Model B (No Programming Required/Programmable) - Image 1](https://m.media-amazon.com/images/I/61dkc1seTpL.jpg)
![GeeekPi Expansion Board 4 Channel Relay Module for Raspberry Pi 3/2 B, 3 Model B+ & 4 Model B (No Programming Required/Programmable) - Image 2](https://m.media-amazon.com/images/I/61PLbOdR3fL.jpg)
![GeeekPi Expansion Board 4 Channel Relay Module for Raspberry Pi 3/2 B, 3 Model B+ & 4 Model B (No Programming Required/Programmable) - Image 3](https://m.media-amazon.com/images/I/71cBuWrvu1L.jpg)
![GeeekPi Expansion Board 4 Channel Relay Module for Raspberry Pi 3/2 B, 3 Model B+ & 4 Model B (No Programming Required/Programmable) - Image 4](https://m.media-amazon.com/images/I/71JhaGug-FL.jpg)
![GeeekPi Expansion Board 4 Channel Relay Module for Raspberry Pi 3/2 B, 3 Model B+ & 4 Model B (No Programming Required/Programmable) - Image 5](https://m.media-amazon.com/images/I/71-lJqsDlKL.jpg)

## Questions & Answers

**Q: Is a 3A relay enough for home heatpump and airconditioning?**
A: Not if u use it to switch the compressor. yes if its just for the thermostat

**Q: Is it possible to connect an i2c  (si7021 temp/humidity sensor) to the i2c pins 3 and 5 when using this hat?**
A: As this board can be stacked, it has male pins on top, so you definitely physically can connect something to the pins. I guess you'll only need to take care of the I2C address you use to not interfere with the ones of the relay board(s)

**Q: Does this board have optocouplers to prevent high voltage interference?**
A: Dont think so.  I wouldn't use it for high voltage anyway.  See my review

**Q: Can i use gpio pins for inputs and use the relay board too?**
A: Yes you can.

## Frequently Bought Together

- GeeekPi 4 Channel Relay Board Module for Raspberry Pi, Power Relay Module for Raspberry Pi 4B & Raspberry Pi 3 Model B+ & Raspberry Pi 3/2 Model B (No Programming Required/Programmable)
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*Product available on Desertcart Colombia*
*Store origin: CO*
*Last updated: 2026-01-22*