Wheelock Fire Alarm Horn 24V (White, Low Frequency) LFHNKW3 Exceder | LFHNKW3

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Regular Price: $96.72

Special Price: $54.16

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Product Features

Energy efficient

Low-profile modern design

• Small footprint with sleek, modern aesthetics

Meets 520 Hz sounder codes for sleeping areas

• NFPA 72 for fire alarm signaling

• NFPA 720 for CO alarm signaling

4 Horn settings in 1 device

• T3 (fire)

• T4 (CO)

• Continuous (coded)

• T3/T4

Special lettering 

Easy installation

• Convenient mounting: Trim plate for single-gang backbox included 

• Finger slide switches—no tools needed for setting changes

• In/out screw terminals for faster installations

• #12 and #18 AWG terminals

Approvals and compliance

• UL 1971, UL 464, ULC S525, ULC S526, CSFM


Wheelock Fire Alarm Horn 24V (White, Low Frequency) LFHNKW3 Exceder

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The Wheelock Fire Alarm Horn 24V (White, Low Frequency) LFHNKW3 Exceder is a low frequency horn designed to meet the NFPA requirements, making it one of the best fire alarms and CO alarms for sleeping rooms and other quiet environments in the industry.

The Exceder notification appliances feature the industry’s lowest current draw, which reduces overall power consumption, allowing for a greater number of appliances on the NAC and fewer power supplies, resulting in material and system cost savings.

The Exceder series compact horns are aesthetically pleasing. Building owners will benefit from the Exceder LED3 line’s design that doesn’t detract from building décor.

With the Exceder LED3 low frequency sounder line, organizations can now meet both sleeping room codes – NFPA 72 and NFPA 720 - with one device, which features two different sound patterns, T3 for fire detection and T4 for CO. The low frequency sounders can replace a facility’s existing appliances, utilizing the same single pair of wires that are currently installed, offering a simple retrofit to meet new codes for sleeping rooms.


  • PRODUCT HEIGHT: 6.1 in
  • PRODUCT WIDTH: 4.55 in
  • PRODUCT WEIGHT: 1.076 lb
  • SOUND LEVEL (DBA): 80 dB
  • VOLTAGE: 24 V
  • HOUSING MATERIAL: UV stabilized plastic
  • OPERATING TEMPERATURE: 32°F to 122°F (0°C to 50°C)
  • APPLICATION: Sleeping areas
  • 520 HZ MODES OF OPERATION: Continuous, T3 (fire), T4 (CO), 3/T4 Sync Control

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At Telcom & Data we strive for long term customer relationships, that’s why we offer a 60 day 100% money back guarantee on ALL of our products. (Except Special Made-to-Order Products, including Wheelock MEDC and Explosion Proof Products) If you are not happy with a product for any reason simply call us at 800-335-0229 and request a Return Authorization number for a full 100% credit. All returns require prior authorization, please. Returned items must be repacked in ORIGINAL packaging NO EXCEPTIONS. Telcom & Data wants to be your one stop telecommunications company. Let us know how were doing by calling 800-335-0229 and ask for extension 832.