The System Sensor HCWL-LF-BP10 is a bulk pack of ten HCWL-LF low frequency sounders. Each unit is an L-Series ceiling-mount sounder in white. These appliances target the NFPA 72 low frequency requirement for sleeping spaces.
The sounder produces a 520 Hz ±10% square wave tone. Research behind the code shows low frequency tones wake sleeping occupants more reliably. Therefore, codes require 520 Hz appliances in many newer sleeping-area installations.
System Sensor HCWL-LF-BP10 Key Features
- Ten HCWL-LF ceiling-mount low frequency sounders per bulk pack
- 520 Hz ±10% square wave tone for NFPA 72 sleeping space requirements
- Rotary switch selects Temporal 3, Temporal 4, Continuous, or Coded patterns
- High/Low volume settings: 80 dBA or 76 dBA reverberant
- Plug-in design with universal mounting plate and wiring-check shorting spring
- Electrically compatible with legacy SpectrAlert and SpectrAlert Advance circuits; works with the MDL3 sync module
Specifications
Each sounder runs on regulated 24 VDC/FWR power with a 16-33 V operating range. Maximum current draw is 111 mA on DC or 151 mA on FWR. The housing measures 6.8 inches in diameter and 1.4 inches high. Operating temperature is 32°F to 120°F at 10-93% humidity, non-condensing. Furthermore, units mount to 4-inch octagon, 4 x 4 x 1.5-inch, or double-gang back boxes.
Note that this model is a sounder only — it has no strobe. For ceiling low frequency sounder strobes, see the PC2WL-LF instead.
Order the System Sensor HCWL-LF-BP10 from Life Safety Consultants
Life Safety Consultants stocks L-Series notification appliances for fire alarm contractors nationwide. To order the HCWL-LF-BP10 ten-pack, call 1-888-557-0558. Alternatively, email sales@lifesafetycom.com for quantity pricing.
For more information, contact the Life Safety Consultants team at (888) 557-0558, or email us at: sales@lifesafetycom.com
Additional information
| Weight | 9 lbs |
|---|---|
| Dimensions | 19.5 × 16 × 7.5 in |
| Condition | New |
| Manufacturers | System Sensor |
| Part Type | Sensor |







