Description

The System Sensor HRL2-LF is a red wall-mounted low frequency horn designed for commercial fire alarm systems and sleeping areas requiring a 520 Hz audible notification signal. Its low frequency square wave tone is engineered to improve emergency notification for sleeping occupants and support applicable NFPA 72 sleeping space requirements.

Part of the System Sensor L-Series, the HRL2-LF features a modern low-profile design, selectable sound output settings, and a plug-in mounting arrangement that simplifies installation and servicing. The appliance is intended for dependable indoor audible notification in residential, hospitality, healthcare, educational, and commercial occupancies.

Product Functions

• Provides low frequency audible fire alarm notification
• Produces a 520 Hz square wave tone
• Supports sleeping area notification requirements
• Provides selectable high and low sound output
• Operates from compatible notification appliance circuits
• Supports synchronized audible signaling
• Provides clear emergency notification
• Allows simplified installation and maintenance

Electrical & System Information

The HRL2-LF operates from a compatible fire alarm notification appliance circuit and is designed for use with nominal 12 volt or 24 volt systems. Its selectable high and low output settings allow system designers to balance sound pressure requirements with circuit current capacity.

The horn produces a 520 Hz square wave tone within the required tolerance for low frequency notification applications. A plug-in design reduces intrusion into the electrical box and helps minimize wiring damage and ground faults during installation.

Features

• Low frequency wall horn
• 520 Hz square wave tone
• Red housing
• Wall-mounted design
• High and low output settings
• Nominal 12 volt operation
• Nominal 24 volt operation
• Plug-in installation
• Low-profile appearance
• Reduced current consumption
• Indoor commercial application
• Designed for sleeping spaces
• Compatible with standard electrical boxes
• Simple field installation

Mounting & Design

The HRL2-LF is designed for wall mounting on a compatible electrical back box. Its plug-in construction allows the mounting plate to be wired before the horn is attached, simplifying installation, testing, and replacement.

The red low-profile housing provides clear fire alarm identification while maintaining a clean appearance in guest rooms, sleeping areas, corridors, healthcare facilities, and other occupied spaces.

Protection & Applications

Suitable for:

• Sleeping Areas
• Hotels and Motels
• Apartment Buildings
• Dormitories
• Hospitals
• Healthcare Facilities
• Assisted Living Facilities
• Schools and Universities
• Residential Buildings
• Commercial Fire Alarm Systems
• Institutional Facilities
• Indoor Notification Systems

Technical Specifications

Manufacturer: System Sensor

Parent Company: Honeywell

Model: HRL2-LF

Series: L-Series

Product Type: Low Frequency Wall Horn

Audible Frequency: 520 Hz with 10 Percent Tolerance

Tone Type: Square Wave

Sound Output: Field Selectable High or Low

Operating Voltage: Nominal 12 Volts or 24 Volts

Housing Color: Red

Mounting: Wall Mount

Installation Type: Plug-In Appliance

Application: Indoor Fire Alarm Notification

Primary Use: Sleeping Area Audible Notification

Listings: Listed for commercial fire alarm notification applications when installed according to the manufacturer instructions, approved system design, applicable NFPA requirements, and local codes. Verify the product label and project requirements before installation.

Applications

The System Sensor HRL2-LF is designed for fire alarm systems requiring a low frequency audible signal in sleeping rooms and other occupied areas. Typical applications include hotels, motels, apartment buildings, dormitories, hospitals, assisted living facilities, healthcare centers, schools, universities, residential facilities, and other buildings requiring dependable 520 Hz emergency notification.

HRL2-LF Datasheet