The TD501D485H is a Communication Modules Through Hole RoHS manufactured by Taisko. It is a multi-function Serial Bus Digital Input/Output Module that provides increased communication reliability in demanding industrial environments. It features a bus voltage range of 3.3V to 5.5V, a 12-bit resolution for easy data distinction, over-current protection, and an adjustable baud rate from 19200 to 57600. The module is designed to be RoHS compliant and meets all international standards for safety and performance. It is designed to be a reliable, easy to use solution for users needing to connect multiple communication devices.