The SY C-A4-P2-O4 Communication Modules DIP RoHS is a component manufactured by Sunyuan, a leading manufacturer of industrial automation products and components. It is a dual port serial communication module designed for data transmission applications. This module has communication port types of RS-232, RS-485 and TTL. It has four ports, a power port of 9-24VDC, a signal port for data transmission and two optional ports. It is RoHS compliant and has a wide temperature range of -40°C to +85°C. It also has a high transmission rate of up to 115200 bps.