System Sensor HRL-LF
System Sensor HRL-LF
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The System Sensor HRL-LF is a red, wall-mounted low-frequency horn from the L-Series, producing a 520 Hz square-wave tone specifically chosen to meet NFPA 72 requirements for waking sleeping occupants, including those with hearing impairment. It shares the L-Series plug-in mounting design and field-selectable output settings, making it suited to sleeping areas in hotels, dormitories, and hospitals where standard higher-frequency horns fall short of the code-mandated low-frequency signal.
Key Features
- 520 Hz low-frequency square wave tone for sleeping-area compliance
- Designed for hearing-impaired and general sleeping-area notification
- Plug-in mounting plate with field-selectable candela and volume
Technical Specifications
- Tone: 520 Hz square wave
- Mounting: Wall mount, red housing
- Voltage: 12/24V selectable
Certifications
- Meets NFPA 72 low-frequency signaling requirements for sleeping areas
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