General Protocol Modbus/TCP, TCP/IP, UDP, HTTP, DHCP, MQTT, SNMP, ASCII command Connectors 1 x RJ45, 1 x 13-pin plug-in screw terminal, 1 x 9-pin plug-in screw terminal
Isolated Digital Input Channels 6 Input Voltage Dry Contact Logic level 0: close to GND Logic level 1: open Wet Contact Logic level 1: 10~30 VDC Logic level 0: 0~3 VDC