Description
The System Sensor HWL-LF-BP10 is a bulk pack of ten low-frequency sounders designed for fire alarm and life safety systems. Each device delivers a 520 Hz tone for NFPA-compliant notification in sleeping areas, offering both reliable performance and efficient large-scale installation.
Technical Specifications
| Condition |
New/Never Used Surplus |
| Brand |
System Sensor |
| Category |
Fire Safety |
| Part Number |
HWL-LF-BP10 |
| Subcategory |
Fire Alarm |
| Type |
Low-Frequency Sounder (Bulk Pack of 10) |
| Tone Frequency |
520 Hz ± 10% square wave |
| Candela Settings |
Field-selectable: 15, 30, 75, 95, 110, 135, 185 cd |
| Volume/Tone Options |
High/Low, Temporal 3, Temporal 4 |
| Mounting |
Wall-mounted, plug-in backplate design |
| Housing Color |
White |
| Compatibility |
SpectrAlert® and SpectrAlert Advance series |
| Power Supply |
24 VDC nominal |
| Standards |
UL 464 listed, NFPA 72 compliant |
| Applications |
Sleeping areas, hotels, apartments, dormitories, assisted living |
| Quantity per Pack |
10 units |
| Weight |
~18 lbs total (approx. 1.8 lbs per unit × 10) |
Information About HWL-LF-BP10
The HWL-LF-BP10 is part of the System Sensor L-Series, engineered to meet the latest NFPA 72 and UL 464 requirements for low-frequency audible notification. Each unit produces a 520 Hz square wave tone proven to be more effective at waking occupants, especially those with mild hearing loss. These horns are designed for quick installation using a plug-in mounting system and feature field-selectable volume and tone settings. Sold in a 10-unit bulk pack, this model is ideal for large projects such as hotels, dormitories, and residential facilities that require consistent, code-compliant notification across multiple rooms.
Key Features:
- 520 Hz Low-Frequency Tone: Meets NFPA 72 requirements for sleeping area notification.
- Bulk Pack of 10 Units: Cost-efficient solution for large-scale installations.
- Field-Selectable Candela Levels: Adjustable settings from 15 to 185 cd for flexibility.
- Multiple Tone Options: Rotary switch allows high/low volume and Temporal 3/Temporal 4 patterns.
- Plug-In Mounting Design: Simplifies wiring and reduces installation errors.
- Continuity Check: Mounting plate shorting spring verifies wiring before installation.
- Modern Aesthetics: Compact, professional design blends into wall or ceiling environments.
- Legacy Compatibility: Electrically compatible with SpectrAlert® and SpectrAlert Advance devices.
The HWL-LF-BP10 delivers the reliability and efficiency required for multi-room fire alarm notification systems.
