The 281DZ-2LP11-000B is an Ethernet node controller module manufactured by Etri. It is a programmable device that is used to control the operation of individual Ethernet nodes. The module is powered by a Power over Ethernet (PoE) supply and is compatible with IEEE 802.3af and 802.3at standards. It has two 10/100Base-T Ethernet ports, eight input channels with one 11-bit programmable A/D converter, and two 8-bit PWM outputs for controlling nodes. The module also features four separate logic level outputs for controlling different functions, as well as various functions such as network bridge, I/O function control, data recording, timing event control, and more. It can be used in a variety of applications such as industrial automation, energy monitoring, transportation, and more.