This document provides a diagram and descriptions of the connections for an I/O monitor type 2 device with the model number 242100.502. It includes labels for digital and relay inputs and outputs used to monitor components like solar panels, batteries, temperature sensors, and power sources/loads on the device. Connections are provided for alarms, power, communications over CAN bus and Ethernet, as well as terminals for interfacing with rectifiers, solar positions, fuses and circuit breakers.