Optocouplers are used to combine different signal levels or to isolate one signal from another. They provide a optoelectronic signal transfer between input and output, and therefore, they never wear out. Product Features Made to last No mechanical wear No contact bounce times Shortest switching times Low input power Silent operation Small width:up to 10 A switching current - only 6.2 mm wide Models with switching frequencies of up to 500 kHz Resistant to shock and vibrations Resistant to EMC interference