Sure Signal Products is no longer in business. For free replacement fuses for recalled alarms sold under the MasterGuard, ThermaLINK and Responsive brand names, consumers should contact Global Health and Safety at (972) 393-5500 or; and for free replacement fuses for DeTech-branded recalled alarms, consumers should contact Reliance Products at (262) 236-0123 or
Name of product:
Heat-activated fire alarm

A defective fusible link sensor (fuse) on the fire alarm can cause the alarm to fail to alert consumers of a fire.

Recall date:
October 29, 2015
About 375,000
Consumer Contact:

Sure Signal Products toll-free at 855-202-3083 from 8 a.m. to 5 p.m. PT Monday through Friday or at and click on CPSC Heat Sensor Recall in the upper right of the page for more information.

Recall Details


This recall involves Sure Signal Products heat-activated fire alarms sold under the following brand names and models:  DeTech FST2004H, MasterGuard QR50, Responsive TR70-R and Thermalink QR50. They are white, round and measure about 7 inches in diameter. The alarms have a round fuse at the center. The fuse is white or chrome and about 1.5 inches in diameter, and has a temperature rating of 117°F or 136°F.  The alarms were manufactured from January 1, 2004 through July 1, 2015. Date codes are listed in a YYDDD format and range from 04001 through 15182. The alarm's model is printed on a label on the back of the alarm. SSP, the temperature rating and the date code can be found on the back of the fuse. 


Consumers should immediately contact Sure Signal Products for free replacement fuses. A video with instructions on how to replace the fuse is available at


None reported

Sold At:

Fire alarm dealers nationwide from January 2004 through September 2015 for between $300 and $375. 


Sure Signal Products, Inc., of Garden Grove, Calif.


Sure Signal Products, Inc., de Garden Grove, California

Manufactured In:
United States
Recall number: