The TD301D485H with Communication Modules Through Hole RoHS manufactured by Taisko is a series of RoHS-compliant communication modules equipped with a TD series 5V Microprocessor RS485/TTL Transceiver IC. The TD301D485H is designed to provide an easy-to-use interface between 2-wire serial communication buses and microprocessor systems. The module features a wide variety of communication protocols, such as the RS-485, TTL and MUX protocols. It also comes with an adjustable SMD resistor design which allows for signal voltage level selection of 1.8V, 5V, and 10V. The module also includes a ESD protection diode, LED status indicator, and built-in EMI suppression. It is RoHS compliant, and is compatible with low power designs.