4 Channel Optocoupler Isolated Board Key benefits Precise isolation and voltage translation: converts 3.3V or 5V input signals to accurately control devices operating from 3.6V to 24V, supporting a wide range of projects with reliable performance. Robust optocoupling: built with strong Photoelectric Isolation Technology to provide antiinterference capabilities. It can drive powerful triodes and MOSFETs, and is suitable for voltage applications, including direct control of lowpower 24V relays. Flexible control options: jumper cap configurations let you set the output to potential or low output as needed. The board enables independence of the 4th and 817 circuits, allowing simultaneous control of different voltages for enhanced versatility. Compact and durable design: made from ABS material with a compact footprint that fits easily into various project enclosures and layouts. Ideal for both hobbyists and professionals requiring reliable performance in diverse electronics tasks. Practical compatibility and performance: designed to interface 3.3V/5V logic with higher voltage loads while maintaining isolation, making it suitable for a variety of control and switching needs. Specifications and features at a glance Channel count: 4 channels Input logic levels: 3.3V or 5V signals Output load voltage range: 3.6V to 24V Isolation technology: photoelectric isolation Driving capability: supports driving powerful triodes and MOSFETs; suitable for voltage applications and lowpower 24V relays Control configuration: jumper cap configurations to choose or low output; independent operation of the 4th and 817 circuits for simultaneous multivoltage control Construction material: ABS Footprint: compact form factor for easy integration into projects Use scenarios Home automation: interface a microcontroller or singleboard computer to a bank of 24V relays, isolating the control side from the voltage load for safer, more reliable operation. Industrial sensing and control: connect 3.3V/5V sensors to highervoltage actuators or controllers, providing robust isolation to minimize noise and interference from industrial environments. Smallscale motor or actuator control: switch or drive higher voltage devices from lowvoltage logic with precise isolation, suitable for hobbyist robotics or compact automation projects.