About 141,000 smoke detectors are being recalled because radio frequency interference can cause them not to alert people to fires.

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 two-wire or four-wire detectors are round, 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, for example: 13 for 2013 and 14 for 2014; and the last three digits representing the day of the year, for example: 084 is the 84th day of 2013, which is March 25, 2013.

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.

No incidents or injuries have been reported.

Customers should immediately contact their security or fire system provider to determine if any of their units are included in the recall. If so, they will receive free replacement and free installation of new smoke detectors. Consumers should not take the alarms out of service until the replacement alarm has been installed. Only professional installers should remove and replace these units.

The products were sold at alarm system, security equipment and electrical equipment contractors, 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 varies between $30 and $50.

Read more: http://www.wbaltv.com/money/141000-smoke-detectors-recalled/27507256#ixzz3AYpiuPtv