The OS25B10 is a high performance standard type photo interrupter, which combines high output GaAlAs infrared light emitting diode and high sensitive phototransistor. Features 10mm space for interruption Easy to mount on PCB High-speed response Widly applicable Application Ideas Tape-end sensors Timing sensors Edge sensors copiers Documents Please visit our wiki page for more info about this product. It will be appreciated if you can help us improve the documents, add more demo code or tutorials. For technical support, please post your questions to our forum.