ROHM Semiconductor RPI-0451E Optical Sensor is an eco-friendly and transmission-type photo-interrupter with a 4.5mm wide gap. This optical sensor features a positioning pin that results in high mounting accuracy. The RPI-0451E sensor operates at -25°C to 85°C temperature range and stored at -30°C to 85°C temperature range. Typical applications include printers, amusement, and optical control equipment.