System Sensor HGRL-LF

Product Overview

 Low Frequency Sounder notification appliances meet NFPA 72® 2010/2013 low-frequency requirements for commercial and residential sleeping spaces, and NFPA 720® 2012 requirements for carbon monoxide detection. The low-frequency tone is more effective at waking individuals during fire events, including those with mild to severe hearing loss. Sounders offer Temp 3, Temp 4, Coded, and Continuous settings for versatile application.

Key Features

• 520 Hz ±10% square wave tone, NFPA compliant
• Full candela range with High/Low tone options to optimize current draw
• Available in compact, standard, and round ceiling models
• Field-selectable candela settings (Wall: 15, 30, 75, 95, 110, 135, 185 cd)
• Rotary switch for High/Low, Temp 3, Temp 4, and Continuous modes
• Plug-in design minimizes back box intrusion
• Mounting plate shorting spring for wiring continuity testing
• Compatible with legacy SpectrAlert and SpectrAlert Advance devices
• Modern design aesthetic
• Compatible with MDL3 sync module