Amendment 0001 Fire Alarm Horn Strobes.pdf

This is a product specification sheet for System Sensor L-Series Indoor Selectable-Output Strobes and Horn Strobes designed for ceiling-mounted fire alarm applications. The document provides comprehensive technical specifications, performance data, and ordering information for audible and visible notification devices used in fire protective service installations.

The L-Series product line includes ceiling-mount horn strobes available in 2-wire and 4-wire configurations with red or white plastic housings, along with separate ceiling strobes. Key features include plug-in design with minimal intrusion into back boxes, tamper-resistant construction, automatic 12- or 24-volt operation selection at 15 and 30 candelas, field-selectable candela settings (15, 30, 75, 95, 115, 150, and 177), and horn operation at 88+ dBA at 16 volts. The devices feature rotary switches for horn tone and volume selection, universal mounting plates, shorting spring continuity checks, and compatibility with SpectAlert and SpectAlert Advance legacy devices plus MDL3 sync modules. Operating specifications include 32°F to 120°F temperature range, 10 to 93% non-condensing humidity, 1 flash-per-second strobe rate, and regulated 12 VDC or 24 VDC/FWR nominal voltage with 8 to 17.5V or 16 to 33V operating ranges. The devices are UL 1971 and UL 464 listed, FM approved, and compliant with Americans with Disabilities Act requirements for visible signaling. Detailed current draw tables, horn strobe tone output data (ranging from 75 to 89 dBA depending on sound pattern and voltage), and dimensional diagrams for ceiling-mount and surface-mount back box configurations are provided to support installation and specification requirements.