Advantech's AMAX-5015-A is an I/O module that is designed to measure temperature using three- or four-wire RTD (Resistance Temperature Detector) point sensors. It allows for the configuration of a single RTD sensor or up to four RTD sensors connected in a network. The outputs of these RTD sensors can be monitored through the RS232 connection using Modbus RTU protocol. Additionally, this module contains an eight-digit analog-to-digital converter, 16-bit digital-to-analog converter, 180 degree safety switch, startup selector switch, alarm selector switch, four power failure outputs and an LED indicator for the status of the module. This I/O module is ideal for applications such as thermocouples, thermistors, resistive bridge sensors, RTDs, and custom thermistors.