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Recall of the Week: ESL, Interlogix hard-wired smoke alarms due to failure to alert consumers of fire

Smoke Alarm 400 series_LARGEEdwards and Interlogix are recalling about 141,000 ESL and Interlogix brand 400/500 series smoke detectors in United States and 13,000 in Canada.

Radio frequency interference can cause the smoke detectors to fail to alert consumers of a fire, the companies and U.S. Consumer Product Safety Commission said.

No incidents or injuries have been reported.

This recall involves 33 models of the 400 and 500 series Edwards (ESL)-branded and Interlogix smoke detectors hard-wired into a security system. Edwards and Interlogix smoke detectors are identical.

The 2-wire or 4-wire detectors are round and white and measure 6 inches across by 2 inches high. The smoke detectors were made for professional installation and used primarily in commercial buildings, schools, hotels/motels, apartments, dormitories, and homes as part of the fire alarm system.

Recalled units have date codes 13084 through 14059 with the first two digits representing the year and the last three digits representing the day of the year. The initials ESL, the date code, and one of the following model numbers are printed on a label on the back of the detector’s cover and on the product’s packaging:

400 series: 429AT, 429C, 429CAD, 429CRT, 429CST, 429CT, 429CTAD, 449AT, 449C, 449CRT, 449CSRH, 449CSRT, 449CST, 449CSTE, 449CT, and 449CTE.

500 Series: 511C, 518C, 521B, 521BXT, 521B-10PKDMP, 521B-10PKG, 521BXT-10PKG, 521BXT-DMP-10PKG, 528B, 528CRXT, 541C, 541C-10PKG, 541CXT, 541CXT-10PK, and 548C.

The recalled alarms were sold at (1) alarm system, security equipment, and electrical equipment contractors and (2) dealers and installers for use in fire alarm systems for commercial buildings, hotels/motels, apartments, dormitories, and homes from March 2013 to February 2014. The cost of the individual detectors was between $30 and $50. The cost of the integrated alarm or security systems varies.

Customers should immediately contact their security or fire system provider to find out if any of their units are included in the recall, the companies and commission advise. If so, they’ll receive free replacement and free installation of new smoke detectors.

Consumers shouldn’t take the alarms out of service until the replacement alarm has been installed. Only professional installers should remove and replace these units.

For more information on the Edwards smoke alarms, call 800-655-4497 and select option 5 from 8 a.m. to 5:30 p.m. ET Monday through Friday or visit and click on Contact Us.

For information on the Interlogix smoke alarms, call 855-286-8889 and select option 2 from 5 a.m. to 5 p.m. PT Monday through Friday or visit and click on Customer Service.

For details on other recalls, see

Copyright 2014, Rita R. Robison, Consumer Specialist


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