Fault Annunciator System EH 9997 Monitoring of industrial plants and buildings. Features . Common alarm annunciator for 6 signals . Optionally for up to 8 signals . Closed circuit operation . Optionally with open circuit operation . With LED for each fault signal . Inputs up to AC/DC 300 V . With relay output for common signal . Pushbutton for fault signal acknowledgement and function test . Front surface 96 x 96 mm Technical specifications Width: 96mm Enclosure design: Front panel mounting Optical signal: LED Alarm inputs: 6 Alarm inputs extendable up to: 8 Operating principle: De-energized on trip Type: EH 9997 Manufacturer: E. Dold & Söhne GmbH & Co. KG Type: EH9997.11 AC/DC24V US=12-70V Art. No.: 0000517