Electronics.The KMOC3043S TL with SMD Optocouplers – Phototransistor Output ROHS, manufactured by Cosmo Electronics, is an isolated light-controlled transistor output module. It consists of an infrared LED and a phototransistor. The module is designed to provide signal isolation between two systems, such as between voltage sources, isolating a low-voltage signal or even to protect a circuit from electrostatic discharge (ESD). It is also RoHS compliant, which means it is free from hazardous environmental substances such as lead, cadmium, and mercury. It is suitable for use in industrial, medical, automotive, communications, and consumer electronics applications. Its features include high CMR (common mode rejection ratio), high dV/dt immunity, and high transfer rate. It also has a low-profile package and can operate reliably from temperatures of -40°C to 105°C.