30A 4 Channel Relay Module Board - 12VDC Expansion For DSP AVR ARM Control Systems

About This Product

Electronics enthusiasts and industrial users, this 4-channel relay module is exactly what you need for controlling high-power devices with your microcontroller projects. With an impressive 30A output capability handling AC 250V or DC 30V, this little board can control some serious equipment - we're talking motors, heaters, lights, and other large current appliances. The 12VDC version (though you can also get 5V or 24V if you specify) features those robust 9.5mm black barrier terminals that feel solid and secure for your wiring connections. What's really cool is the broad compatibility - it works with pretty much any MCU you throw at it, plus industrial applications, PLC control systems, and smart home automation projects. The built-in optocoupler provides excellent anti-interference capability, meaning you get stable performance even in electrically noisy environments. The board measures about 130.4 x 69.0mm, so it's compact enough for most projects but substantial enough to handle the power it's rated for. Whether you're building an automated system, industrial control panel, or just need reliable switching for high-power devices, this relay module delivers professional-grade performance without the professional price tag. The construction feels durable, and the specifications are clearly labeled so you know exactly what you're working with. It's one of those components that bridges the gap between your low-voltage control circuits and the high-power devices you actually want to operate.