{"product_id":"2-channel-spst-relay-module-m5stack-gpio-i2c-grove-port","title":"2-Channel SPST Relay Module for M5Stack – GPIO I2C Grove","description":"\n\u003ch2\u003e2-Channel SPST Relay Unit Module for M5Stack\u003c\/h2\u003e\n\u003cp\u003eTake your automation and DIY electronics projects to the next level with this compact, powerful 2-Channel SPST Relay Unit Module designed for M5Stack. Whether you're building smart home controllers, industrial prototypes, or creative maker projects, this relay module delivers reliable switching performance with minimal setup.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMade in Mainland China.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePowerful Switching Capability:\u003c\/strong\u003e Controls circuits up to DC 8A\/28V or AC 8A\/250V. Acts as an automatic switch, using a small control current to manage larger load currents — ideal for circuit switching and safety protection applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSingle Bus GPIO Control:\u003c\/strong\u003e Simple GPIO programming lets you output high or low logic levels to connect the common terminal (COM) to either the ON or OFF pins, making relay operation straightforward and efficient.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Mountable Design:\u003c\/strong\u003e Measures just 56.0 × 24.0 × 19.0 mm and weighs only 0.34 oz. Includes 2 LEGO-compatible mounting holes for versatile installation in enclosures or project builds.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLow Power Consumption:\u003c\/strong\u003e Runs at 5V with only 40mA current draw. Features a fast coil action time of just 6ms and release time of 4ms for rapid, responsive switching.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMulti-Platform Development Support:\u003c\/strong\u003e Compatible with Arduino, UIFlow Blockly, and Python, making it accessible for beginners and experienced developers alike.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIncludes HY2.0-4P Grove Cable:\u003c\/strong\u003e Ready to connect right out of the box with the included Grove-compatible cable, compatible with M5Stack's Grove port ecosystem.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChannels\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 (SPST)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDC Load Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e8A \/ 28V\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAC Load Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e8A \/ 250V\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCurrent Draw\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e40mA\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCoil Action Time\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6ms\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRelease Time\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4ms\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e56.0 × 24.0 × 19.0 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e~0.34 oz (9.6g)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePlastic\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInterface\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGPIO \/ I2C \/ Grove Port (HY2.0-4P)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible Platforms\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eM5Stack, Arduino, UIFlow Blockly, Python\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × 2-Channel SPST Relay Unit Module\u003c\/li\u003e\n  \u003cli\u003e1 × HY2.0-4P Grove Cable\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cem\u003eNote: Color may vary slightly due to monitor settings and lighting conditions. Measurement tolerance is ±1–3cm.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eYou May Also Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/10pcs-wooden-handle-nylon-bristle-paint-brush-for-oil-painting-dusting-and-cleaning-unrechargeable-hand-tool-set-without-batt-2\"\u003e10Pcs Wooden Handle Nylon Bristle Paint Brush – Hand Tool Set\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1pc-precision-japanese-double-edged-hand-saw-sk5-steel-fine-toothed-for-carpentry-and-gardening-6-inch-blade-portable-mini-1\"\u003e1pc Precision Japanese Double-Edged Hand Saw – SK5 Steel\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/10cm-wireless-led-motion-sensor-night-light-type-c-rechargeable-cabinet-wardrobe-lamp-for-staircase-backlight-kitchen-lighting\"\u003e10CM Wireless LED Motion Sensor Night Light – Type-C Rechargeable\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/personal-protective-equipment\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on personal protective equipment\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What programming languages and platforms are compatible with this 2-channel relay module?\u003c\/h4\u003e\n\u003cp\u003eA: This relay module is compatible with Arduino (C\/C++), UIFlow Blockly (visual block programming), and Python, making it a flexible choice for a wide range of M5Stack and ESP-series automation projects.\u003c\/p\u003e\n\u003ch4\u003eQ: What is the maximum load this relay module can safely switch?\u003c\/h4\u003e\n\u003cp\u003eA: Each relay channel is rated for up to DC 8A at 28V or AC 8A at 250V. This allows the module to safely control a variety of household and industrial electrical loads from a low-power microcontroller signal.\u003c\/p\u003e\n\u003ch4\u003eQ: How does the Grove port interface work with M5Stack?\u003c\/h4\u003e\n\u003cp\u003eA: The module uses a standard HY2.0-4P Grove connector, which plugs directly into any M5Stack Grove port. The included Grove cable makes the connection tool-free and straightforward, supporting both GPIO and I2C communication modes.\u003c\/p\u003e\n\u003ch4\u003eQ: Is this relay module suitable for beginners in electronics?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! The single-bus GPIO control design means you only need to output a high or low signal to switch the relay on or off. Combined with UIFlow Blockly's drag-and-drop interface, even beginners can integrate this module into their projects quickly.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What programming languages and platforms are compatible with this 2-channel relay module?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This relay module is compatible with Arduino (C\/C++), UIFlow Blockly (visual block programming), and Python, making it a flexible choice for a wide range of M5Stack and ESP-series automation projects.\"}}, {\"@type\": \"Question\", \"name\": \"What is the maximum load this relay module can safely switch?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Each relay channel is rated for up to DC 8A at 28V or AC 8A at 250V. 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