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Description

4 Channel Relay Hat Board For Raspberry Pi is one of the "docker pi" module.Up to four layers can be stacked.It has 4 channel relay that you can put it on your smart home project. It also uses high-quality relay modules combined with the most popular microcontroller technology to communicate with the Raspberry Pi..
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 relay module is very fast, easy to install, and supports multi-language development, making it ideal for smart home projects. It supports multiple modules stacked together for use.It can be accessed programmatically or directly by shell..
WIKI:https://wiki.52pi.com/index.php/4_Channel_Relay_Hat_Board_For_Raspberry_Pi_SKU:_EP-0099.
Package includes: 1x 4 Channel Relay Hat Board, 4x M2.5x16 copper stick, 8x M2.5x12 screws, 1x Instructions.

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: 1x 4 Channel Relay Hat Board 4x M2.5x16 copper stick 8x M2.5x12 screws 1x Instructions

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GeeekPi Raspberry Pi Expansion Board 4 Channel Relay Board Module Power Relay Module for Raspberry Pi 3/2 B & Raspberry Pi 3 Model B+ & Raspberry Pi 4 Model B(No programming required/Programmable)

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