Condition: New
System Sensor HW-LF
System Sensor HW-LF
Low Frequency Sounder White
Regular price
$39.99
Sale price
$39.99
Regular price
Shipping calculated at checkout.
In stock!
The System Sensor HW-LF is a two-wire, low-frequency sounder in a white indoor wall/ceiling housing, built to meet NFPA 72 requirements for waking sleeping occupants with a 520 Hz square-wave tone rather than a standard high-frequency horn tone. Its plug-in design seats directly into the back box with minimal wiring intrusion, the same mounting approach used across System Sensor's L-Series notification line.
Key Features
- Low-frequency 520 Hz square-wave tone addresses NFPA 72 sleeping-area notification requirements
- Two-wire, 12/24-volt operation for wall or ceiling mount
- Plug-in design minimizes back-box intrusion and reduces ground-fault risk during installation
Technical Specifications
- Tone: 520 Hz ± 10%, square wave
- Voltage: 12/24VDC, two-wire
- White housing, indoor wall mount
Certifications
- UL Listed, compliant with NFPA 72 low-frequency signaling requirements for sleeping areas
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