The CTM8251KT is a Through Hole RoHS Communication Module manufactured by Taisko. It is a high-reliability wired communication module designed for various communication needs such as long-distance control, data transmission, and security. The module features two-way communication, CAN communication, RS-485 digital communications, and muti-master/slave network protocols that allow for stable and secure data transfers. The module also has built-in surge protection, ESD protection, and is designed with a low power consumption of only 0.1A at 5V. The CTM8251KT is a reliable and powerful communication module for various installations and applications.