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 (JDYX2/8) using a max T2.5 A fuse in the 24 Vdc power supply. It also includes multilingual warnings that electrical connection must be performed by trained specialists, notes on reduced light intensity and life duration at >50 °C, and detailed pin assignments for M12 connectors.