System Sensor HCWL2-LF Low Frequency Sounder Ceiling

Product Description

The SYSTEM SENSOR HCWL2-LF is a low frequency ceiling-mount sounder designed for life-safety notification systems in commercial and residential fire alarm applications. Low frequency audible devices produce a 520 Hz square wave tone that meets code requirements for sleeping area notification, where high frequency sounders may not reliably wake occupants. This unit mounts to the ceiling in a white finish, making it suitable for installation in corridors, hotel rooms, dormitories, and similar occupancies. It is sold individually and is typically installed by licensed fire alarm technicians or electricians as part of an addressable or conventional fire alarm system.

The HCWL2-LF is intended for ceiling-mount installations in applications requiring low frequency audible notification. Common install scenarios include sleeping areas in hotels, dormitories, assisted living facilities, and multi-family residential buildings where model building and fire codes mandate low frequency audio signals for occupant notification. The white housing blends with standard ceiling finishes in both new construction and retrofit projects.

Key Features

• Low frequency 520 Hz square wave tone for sleeping area code compliance
• Ceiling-mount configuration for overhead notification coverage
• White finish for unobtrusive installation in finished spaces
• Single-unit packaging for targeted replacement or new-construction installs
• Designed for use in fire alarm notification appliance circuits

Compatibility

Designed as an OEM-style notification appliance for ceiling-mount installation on conventional or addressable fire alarm notification appliance circuits requiring low frequency audible output.

Installation Notes

Installation must be performed by a licensed fire alarm technician or electrician in accordance with NFPA 72 and applicable local fire codes. De-energize the notification appliance circuit at the fire alarm control panel before making any wiring connections. Verify polarity on supervised circuits prior to restoring power. Ceiling mounting height and placement must comply with the authority having jurisdiction and the manufacturer installation instructions for audibility coverage.