System Sensor HCRL-LF L-Series Indoor Low Frequency Sounder, Red
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Key Features
- Meets NFPA 72 sleeping-space requirements with a 520 Hz ±10% square-wave tone to improve wakeability and occupant safety
- Plug-in design and minimal back-box intrusion speed installations, reduce costly ground faults, and simplify maintenance
- Universal mounting plate with onboard shorting spring lets installers test wiring continuity and protects devices during construction
- Listed for wall and ceiling use and finished in high-visibility red for easy identification in indoor security and fire notification systems
- Backwards-compatible with legacy SpectrAlert devices and supports synchronization (MDL3) for seamless system upgrades and integration
Quick Specifications
- Product Model
- HCRL-LF
- Brand Name
- System Sensor
- Product Name
- HCRL-LF Security Alarm
- Product Type
- Low Frequency Sounder
Explore the details
Product information
HCRL-LF
Overview
Improve occupant safety and simplify installation with the System Sensor HCRL-LF L-Series indoor low-frequency sounder. Designed to meet NFPA 72 sleeping-space requirements, this low-frequency sounder produces a 520 Hz ±10% square-wave tone that increases wakeability for sleeping or impaired occupants — a critical benefit for hospitals, dormitories and assisted-living facilities. The red, indoor-rated unit supports both wall and ceiling mounting and features a plug-in design with minimal back-box intrusion to reduce installation time and eliminate many common ground-fault issues. A universal mounting plate with an onboard shorting spring enables pre-installation continuity testing and protects devices during construction. Electrically compatible with legacy SpectrAlert and SpectrAlert Advance devices and supporting MDL3 synchronization, the HCRL-LF integrates easily into existing security, fire monitoring and surveillance systems. Choose this reliable, code-compliant sounder to streamline upgrades and improve alarm performance — ideal for commercial, institutional and multi-family applications. Contact us to specify the HCRL-LF for your next project or add it to your system build.
Features
- Meets NFPA 72 sleeping-space requirements with a 520 Hz ±10% square-wave tone to improve wakeability and occupant safety
- Plug-in design and minimal back-box intrusion speed installations, reduce costly ground faults, and simplify maintenance
- Universal mounting plate with onboard shorting spring lets installers test wiring continuity and protects devices during construction
- Listed for wall and ceiling use and finished in high-visibility red for easy identification in indoor security and fire notification systems
- Backwards-compatible with legacy SpectrAlert devices and supports synchronization (MDL3) for seamless system upgrades and integration
| General Information | |
|---|---|
| Brand Name | System Sensor |
| Manufacturer | Honeywell International, Inc |
| Product Name | HCRL-LF Security Alarm |
| Product Type | Low Frequency Sounder |
| Product Model | HCRL-LF |
| Product Series | L |
| Application/Usage | Alarm, Security |
| Country of Origin | MX |
| Manufacturer Part Number | HCRL-LF |
| Technical Information | |
| Alarm Type | Audible |
| Connectivity Technology | Wired |
| Physical Characteristics | |
| Color | Red |
| Height | 3.90" |
| Form Factor | Ceiling Mount |
| Power Description | |
| Power Source | DC Power |
| Input Voltage | 33V DC |
| Product Information | |
| Mount Type | Ceiling Mount |
| Miscellaneous | |
| Indoor/Outdoor | Indoor |
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Is this right for your project?
Confirm the model, required accessories and delivery needs before ordering.
- SKU:
- HCRL-LF
- Manufacturer part:
- HCRL-LF
How do I confirm compatibility?
Check the specifications and manufacturer documents for your existing system. Send us your model numbers and project requirements if you need help selecting equipment or accessories.
Ask a product specialistWhen will this item ship?
Availability is shown above. Special-order items and project quantities may need additional lead time. Contact us to confirm a delivery date before scheduling installation.
Shipping, freight and delivery detailsWhat should I know about returns?
Returns require an approved RMA. Consult the linked return policy for deadlines and eligibility. For standard non-defective returns, eligible factory-sealed items carry a 15% restocking fee and customer-paid return shipping; open-box and used items are refused. Defective and DOA claims follow the policy's separate terms. Special orders and other exclusions are final sale.
Read return eligibility and exclusionsSystem Sensor HCRL-LF L-Series Indoor Low Frequency Sounder, Red
HCRL-LF