The CT184GB(T1) with Optocouplers SOP-4_P2.54 RoHS is an electrical component manufactured by CT Micro International. This component is an optocoupler, also known as an optoelectronic isolation component, that provides electrical isolation between two circuits. It consists of an infrared light-emitting diode (LED) that is optically coupled to a phototransistor, thus allowing electrical signals from one circuit to be isolated and transferred to the other. The RoHS certification indicates that the component is in compliance with the Restriction of Hazardous Substances (RoHS) restrictions. The SOP-4_P2.54 configuration indicates that the component has four pins, a 2.54mm pitch and total package size of 4mm. This component is primarily used in industrial and commercial applications such as industrial controls, motor drives, sensors, and telecommunications.