Siemens MLC multiplex loop card for fire alarm control panel signal line circuit management.

Compliance

• UL 864
• ULC Listed

Key features

• Loop card for Siemens fire alarm control panels providing addressable SLC interface and management
• Supports sensitivity querying and diagnostic monitoring of intelligent detectors connected to the loop
• UL 864 listed as a control unit component within Siemens Cerberus PRO and FireFinder XLS systems
• ULC Listed for Canadian fire alarm system applications requiring loop card replacement or expansion
• Used for both original panel installation and as a corrective maintenance replacement component

The MLC is a Siemens multiplex loop card installed within fire alarm control panel cabinets in Cerberus PRO and FireFinder XLS systems. It manages communication between the panel processor and all addressable devices connected to the signal line circuit, handling alarm polling, sensitivity diagnostics, and fault reporting. Loop cards are critical system components and the MLC is used both as an original equipment installation part and as a replacement during corrective maintenance of installed panels.

Verify panel/device family compatibility before ordering.