The CYTLP521-1(GB-TP2) with Optocouplers Sop-4 RoHS, manufactured by OCIC, is a photocoupled isolator component module. It is a 4-pin surface-mount package with a high dielectric strength of up to 5000Vrms and an insulation resistance of up to 1000Mohm. It features a built-in resistor, which further isolates the high-speed signals from noise and other signals on the input and output sides. Additionally, it supports both digital and analog signals, and provides a high-accuracy current transfer ratio of 0.6%. It also has a low power consumption of 5.1 mW. This module is RoHS compliant, meaning it is free from substances that are hazardous to the environment.