Description <br>Features: <br>brand new and high quality <br>This board is helpful for connecting digital systems (like a 5V microcontroller) to a high-voltage or noisy system. This board electrically isolates a controller from the high-power system by use of an opto-isolator IC. <br>This IC has four LEDs and four photodiodes built-in. <br>This allows the low-voltage side to control a high voltage side. <br>We often use this board to allow a microcontroller control servos or other motors that use a higher voltage than the TTL logic on the (3.3V or 5V) micro,and may cause electromagnetic interferance with our system as the motors turn on and off. <br>This board will isolate the systems, creating a type of electrical noise barrier between devices. <br> <br>Specifications: <br>Material:PCB <br>Net Weight:96g <br> <br>Note: <br>Please allow 1mm errors due to manual measurement. <br>Due to the difference between different monitors, the picture may not reflect the actual color of the item. <br> <br>Package includes: <br>1x Optocoupler Board