System Sensor L-Series audible visible notification products are rich with features guaranteed to maximize profits with lower current draw and modern aesthetics.

The L-Series offers the most versatile and easy-to-use line of low frequency sounder and low frequency sounder strobes in the industry. With white and red plastic housings, listed for wall and ceiling mounting, L-Series Low Frequency can meet virtually any application requirement.

Main Features

• 520 Hz ± 10% square wave tone, NFPA compliance
• Full candela range plus High/Low tone options to optimize current draw for a wide variety of applications
• Compact, standard, and round ceiling options
• Field-selectable candela settings. Wall units: 15, 30, 75, 95, 110, 135, and 185. Ceiling units: 15, 30, 75, 95, 115, 150, and 177
• Rotary switch for High/Low, Temp3, Temp4, and Continuous settings. Sounder-only models also offer a Coded setting.
• Plug-in design with minimal intrusion into the back box
• Mounting plate shorting spring checks wiring continuity before device installation
• Electrically compatible with legacy SpectrAlert and SpectrAlert Advance devices (Direct replacement for HW/R-LF and P2R/WH-LF)
• Compatible with MDL3 sync module
• Sounders listed for ceiling and wall
• Round Sounder Strobes listed for ceiling and wall
• Updated modern aesthetics