Modbus TCP Based Ethernet I/O Module with 2 Ethernet ports for daisy-chain networking, with 16-channel Digital Input and can be configured as Wet Contact Sink or Source type. 32-bit counter. LED Indicators show the status of I/O. Communicable over Modbus TCP and Modbus UDP protocol, Supports operating temperatures of -25°C ~ +75°C (-13°F ~ 167°F) and has a din rail mount.