The 859-940 is a DIN-rail mount, high-speed optocoupler. It features a frequency input range up to 1.5MHz. It provides jumper-selectable, industry-standard input voltages of 5–10VDC or 10–24VDC. The 6mm-wide optocoupler serves high-speed machine vision applications and quality testing with voltage conversion and isolation, as well as signal and level amplification.