DescriptionThe item is a pack of 50 pcs professional and practical photoelectric coupler, which is mainly made of durable hard materials. With easy and safe to use, it is really a wonderful adjustable photoelectric coupler for choice. An electrical-optical-electric conversion device that uses light as a medium to transmit electrical signals.Features- Color: Black. - Material: Plastic. - Size: 0.80 x 0.70 x 0.40cm/ 0.31 x 0.28 x 0.16 inch. - This is electrical-optical-electric converter. You can use it to conversion the voltage, but not to increase the voltage. - The combination perfectly photoelectric coupler. It will be a powerful assistant for your experimental project. - DIY mobile power supply, monitoring power supply, camera power supply, vehicle power supply, communication equipment power supply etc. - These couplers are small in size and easy to attach to various devices. It can be used widely. - This optically coupled isolator features high current transfer ratio, high isolation voltage.