The Sure-Lite and AtLite exit and emergency lights made by Cooper Lighting of Peachtree City, Ga., can fail during an emergency, CPSC said in a statement.

About 9,000 emergency and exit lights were sold through authorized dealerships between September 2007 and June 2008 for between $200 and $500. Most were used in commercial buildings, CPSC said.

The company is providing free replacements, CPSC said.

Consumers can call Cooper Lighting at 800-954-7228 for information.