The ET-2217CI-4 is a channel-to-channel isolated analog input module featuring 4 analog input channels. The module provides a programmable input range on all Analog Input channels (±1 V, ±2.5 V, ±5 V, ±10 V, 0 to 20mA, 4 to 20mA and ±20 mA). Each analog input channel can be configured for an individual input range, with high overvoltage protection of 120 VDC and 50mA overcurrent protection at 110 VDC/VAC. Voltage and current input is software configurable. The ET-2217CI-4 offers an adjustable sampling rate, with options for fast(200Hz) or normal(10Hz) mode. It can record voltage and current information, along with the date and time stamps. This module supports common industrial protocols such as Modbus TCP, as well as the MQTT- an emerging machine-to-machine (M2M)IoT (Internet of Things) connectivity protocol. Additionally, the module also features per-channel open wire detection for 4 to 20 mA input and provides 4 kV ESD/EFT protection, 2 kV Surge protection, and 3000 VDC intra-module isolation and channel-to-channel isolation.