eSIGN 657 Series Installation and Safety Instructions

This document provides installation and safety instructions for the eSIGN 657 series devices, specifying that a limited voltage/current source must comply with UL248 standards using a T2.5 A max fuse in a 24 Vdc power supply. It includes multilingual warnings about electrical connection by trained specialists only, notes on usage above 50°C reducing brightness and lifespan, and details pin assignments, part numbers, and mounting requirements for various models.