The PC817X2NSZ2B with Optocouplers DIP-4 RoHS is an electrical component manufactured by the Japanese company Sharp. It is a 4-pin, dual channel, photocoupler integrated circuit (IC) with output voltage isolation, designed to be used as an input interface between devices with different electrical potentials. The isolation range of this IC is 4000Vrms (min) and it is compliant with RoHS (Restriction on Hazardous Substance) directives. This IC can be used for signal transmission, amplifier circuit isolation, current sensing, or control isolation applications.