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prEN 60839-7-5
Alarm systems - Part 7-5: Message formats and protocols for serial data interfaces in alarm transmission systems - Alarm system interface employing a two-wire configuration in accordance with ISO 8482
DIN EN IEC 61535/A1
Installation couplers intended for permanent connection in fixed installations IEC 23/1145/CD:2024 + IEC 23/1146/CD:2024 + IEC 23/1147/CD:2024