Product News: Safety & Security Equipment

Low Frequency Sounders meet codes for sleeping rooms.

Press Release Summary:

Jun 02, 2014 - Designed to meet both NFPA fire alarm and carbon monoxide 520 Hz code requirements for sleeping areas, Wheelock Exceder LED Sounders feature 2 different sound patterns and multiple modes of operation, including T3 for fire detection, T4 for carbon monoxide, Continuous, and T3/T4. When set to T3/T4, appliance can switch from T3 to T4 based upon condition sensed by fire alarm control panel. Sounder strobes utilize LED as light source and include 110 candela setting.

Eaton Corp. - Cleveland, OH

Original Press Release

Eaton Launches Exceder LED Low Frequency Sounder Line to Meet New Codes for Sleeping Room Applications

Press release date: May 21, 2014

LONG BRANCH, N.J. … Power management company Eaton today announced that its Cooper Notification business has introduced the Wheelock Exceder LED low frequency sounder line. These new products represent a first in the industry and are designed to meet both the National Fire Protection Association’s (NFPA) fire alarm and carbon monoxide 520 Hertz (Hz) code requirements for sleeping areas.

“Eaton is committed to providing our customers with cutting-edge and efficient solutions, allowing organizations to 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 carbon monoxide,” said Huyenchau Villas, product manager, Eaton’s Cooper Notification business. “The Exceder LED low frequency sounders and sounder strobes can replace a facility’s existing appliances, using the same pair of wires currently installed and offering a simple retrofit to meet new codes for sleeping rooms.”

To improve the effectiveness of waking up individuals in the event of fire, the NFPA 72 National Fire Alarm and Signaling Code added requirements in the 2010 and 2013 editions, effective January 1, 2014, that audible alarms in sleeping rooms shall produce a low frequency temporal pattern (T3). The NFPA 720 Standard for the Installation of Carbon Monoxide (CO) Detection and Warning Equipment introduced requirements in the 2009 edition that audible alarms in sleeping rooms shall produce a low frequency T4 pattern for CO detection, effective January 1, 2015. These codes affect sounders in hotel and motel guest rooms, college and university dormitories, and assisted living facilities.

The Exceder LED low frequency sounder strobes and sounders feature multiple 520 Hz modes of operation, including T3, T4, Continuous and T3/T4. When the device is set to T3/T4, the appliance can switch from T3 to T4 based upon the condition sensed by the fire alarm control panel.

Like the entire Wheelock Exceder LED product line, models feature one of the industry’s smallest footprints and a sleek, modern, low-profile design. The low-frequency sounder strobes utilize a LED as the light source, resulting in energy efficiency that enables material and system cost savings, allowing for a greater number of appliances on the notification appliance circuit and fewer power supplies. All strobe models include a 110 candela setting.

To learn more about this solution or others from Eaton’s Cooper Notification business, visit

Eaton’s Cooper Notification business is a leader in developing integrated, advanced technology and code-compliant solutions for life safety and mass notification, providing critical, emergency communications for higher education, industrial, commercial, government and military markets.

Eaton’s Electrical Sector is a global leader with expertise in power distribution and circuit protection; backup power protection; control and automation; lighting and security; structural solutions and wiring devices; solutions for harsh and hazardous environments; and engineering services. Eaton is positioned through its global solutions to answer today’s most critical electrical power management challenges.

Eaton is a power management company with 2013 sales of $22.0 billion. Eaton provides energy-efficient solutions that help our customers effectively manage electrical, hydraulic and mechanical power more efficiently, safely and sustainably. Eaton has approximately 101,000 employees and sells products to customers in more than 175 countries. For more information, visit