AMAX-5057SO-A with I/O Modules 16-ch Source type DO Module is a digital I/O module manufactured by Advantech. This module is a 16-channel source-type digital output module for the Modular Automation eXtension (AMAX) distributed I/O system. The module features optically isolated circuits, ESD protection, and a wide operating temperature range. It is capable of speeds up to 2 Mbit/s at 250 Volts, and can be used with a 24V or 110V power supply. The module also features LED indicators to monitor the output state of each channel. It has an onboard communications port for Modbus RTU protocol, and offers additional extended features such as SNMP and EtherNet/IP. The module is UL listed, CE approved, and RoHS compliant.