{"id":8115318816948,"title":"3-Channel Relay HAT Expansion Board Compatible with Raspberry Pi 5\/4B\/3B+\/3B\/2B\/Zero, Optocoupler Isolation Relay Module for Home Automation, IoT, Fits Arduino Projects","handle":"3-channel-relay-hat-expansion-board-compatible-with-raspberry-pi-5-4b-3b-3b-2b-zero-optocoupler-isolation-relay-module-for-home-automation-iot-fits-arduino-projects","description":"\u003ch3\u003e3-Channel Relay HAT Expansion Board Compatible with Raspberry Pi 5\/4B\/3B+\/3B\/2B\/Zero, Optocoupler Isolation Relay Module for Home Automation, IoT, Fits Arduino Projects\u003c\/h3\u003e\n\u003cp id=\"b\"\u003eOverview The 3-Channel Relay HAT Expansion Board is a powerful and reliable\nrelay module for Raspberry Pi home automation, robotics, and IoT projects.\nDesigned for seamless integration, it connects directly to the Rasp-berry Pi\n40-pin GPIO header without the need for additional drivers, supporting\nRaspberry Pi 5, 4B, 3B+, 3B, 2B, and Zero series boards. With three\nindependent relays, this relay HAT expansion board allows you to precisely\ncontrol multiple devices, including lights, motors, sensors, and smart\nappliances, making it an essential tool for IoT developers and DIY makers.\nEach relay channel features an LED indicator, providing real-time visual\nfeedback of the relay status for easy monitoring during operation. Built with\noptocoupler isolation technology, the 3-channel relay board offers high-\nvoltage protection and stable performance, ensuring your Raspberry Pi is safe\nfrom electrical interference. This makes it suitable for industrial\nautomation, smart home relay control, and educational projects. The board\nsupports customizable GPIO configuration via jumpers, enabling flexible relay\ncontrol instead of being limited to default pins. This feature provides\ndevelopers with more freedom when working on complex Arduino-compatible\nautomation projects or Rasp-berry Pi relay-based systems. In addition, the\nrelay expansion module comes with open-source libraries, tutorials, and demo\ncodes, making it easy to get started with Rasp-berry Pi or Ar-duino relay\nprogramming. Whether you are building a DIY home automation system, robotics\nrelay controller, or IoT gateway, this 3-channel relay HAT provides safety,\nflexibility, and reliable performance. Package contents: 1. 3-CH Relay Hat x 1\n2. Accessory pack x 1\u003c\/p\u003e \n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n \u003cul class=\"a\"\u003e\n \u003cli\u003e3-Channel Relay Expansion for Raspberry Pi: This 3-CH relay HAT expansion board fits Raspberry Pi 5, 4B, 3B+, 3B, 2B, Zero series, enabling reliable on\/off switching for home automation, robotics, and IoT relay control projects.\u003c\/li\u003e\n \u003cli\u003eOptocoupler isolation for safety: the relay expansion board with isolation provides high-voltage interference protection, keeping your Rasp-berry Pi relay module stable and safe in demanding environments.\u003c\/li\u003e\n \u003cli\u003eLED Indicators for Relay Status: Each relay channel on the 3-channel relay board includes an LED indicator, allowing you to easily monitor the on\/off status of connected devices during operation.\u003c\/li\u003e\n \u003cli\u003eFlexible GPIO configuration: features jumper-selectable GPIO pins, making the relay HAT for Raspberry Pi highly customizable for different programming needs, robotics, or DIY Ar-duino compatible automation systems.\u003c\/li\u003e\n \u003cli\u003eEasy integration and open-source support: designed for plug-and-play use with Rasp-berry Pi GPIO, this relay expansion HAT comes with sample codes, tutorials, and open-source resources for quick development of IoT relay applications.\u003c\/li\u003e\n \u003c\/ul\u003e","published_at":"2026-09-02T11:01:06+10:00","created_at":"2026-09-02T00:01:41+10:00","vendor":"SEENGREAT","type":"Optocouplers","tags":["industrial_DE_Aug2026"],"price":15600,"price_min":15600,"price_max":15600,"available":true,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":44375044194484,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"de-B0FP2J41NJ","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"3-Channel Relay HAT Expansion Board Compatible with Raspberry Pi 5\/4B\/3B+\/3B\/2B\/Zero, Optocoupler Isolation Relay Module for Home Automation, IoT, Fits Arduino Projects","public_title":null,"options":["Default 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Relay HAT Expansion Board Compatible with Raspberry Pi 5\/4B\/3B+\/3B\/2B\/Zero, Optocoupler Isolation Relay Module for Home Automation, IoT, Fits Arduino Projects\u003c\/h3\u003e\n\u003cp id=\"b\"\u003eOverview The 3-Channel Relay HAT Expansion Board is a powerful and reliable\nrelay module for Raspberry Pi home automation, robotics, and IoT projects.\nDesigned for seamless integration, it connects directly to the Rasp-berry Pi\n40-pin GPIO header without the need for additional drivers, supporting\nRaspberry Pi 5, 4B, 3B+, 3B, 2B, and Zero series boards. With three\nindependent relays, this relay HAT expansion board allows you to precisely\ncontrol multiple devices, including lights, motors, sensors, and smart\nappliances, making it an essential tool for IoT developers and DIY makers.\nEach relay channel features an LED indicator, providing real-time visual\nfeedback of the relay status for easy monitoring during operation. Built with\noptocoupler isolation technology, the 3-channel relay board offers high-\nvoltage protection and stable performance, ensuring your Raspberry Pi is safe\nfrom electrical interference. This makes it suitable for industrial\nautomation, smart home relay control, and educational projects. The board\nsupports customizable GPIO configuration via jumpers, enabling flexible relay\ncontrol instead of being limited to default pins. This feature provides\ndevelopers with more freedom when working on complex Arduino-compatible\nautomation projects or Rasp-berry Pi relay-based systems. In addition, the\nrelay expansion module comes with open-source libraries, tutorials, and demo\ncodes, making it easy to get started with Rasp-berry Pi or Ar-duino relay\nprogramming. Whether you are building a DIY home automation system, robotics\nrelay controller, or IoT gateway, this 3-channel relay HAT provides safety,\nflexibility, and reliable performance. Package contents: 1. 3-CH Relay Hat x 1\n2. Accessory pack x 1\u003c\/p\u003e \n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n \u003cul class=\"a\"\u003e\n \u003cli\u003e3-Channel Relay Expansion for Raspberry Pi: This 3-CH relay HAT expansion board fits Raspberry Pi 5, 4B, 3B+, 3B, 2B, Zero series, enabling reliable on\/off switching for home automation, robotics, and IoT relay control projects.\u003c\/li\u003e\n \u003cli\u003eOptocoupler isolation for safety: the relay expansion board with isolation provides high-voltage interference protection, keeping your Rasp-berry Pi relay module stable and safe in demanding environments.\u003c\/li\u003e\n \u003cli\u003eLED Indicators for Relay Status: Each relay channel on the 3-channel relay board includes an LED indicator, allowing you to easily monitor the on\/off status of connected devices during operation.\u003c\/li\u003e\n \u003cli\u003eFlexible GPIO configuration: features jumper-selectable GPIO pins, making the relay HAT for Raspberry Pi highly customizable for different programming needs, robotics, or DIY Ar-duino compatible automation systems.\u003c\/li\u003e\n \u003cli\u003eEasy integration and open-source support: designed for plug-and-play use with Rasp-berry Pi GPIO, this relay expansion HAT comes with sample codes, tutorials, and open-source resources for quick development of IoT relay applications.\u003c\/li\u003e\n \u003c\/ul\u003e"}