Intermatic Inc. is recalling about 240,000 Model ST01 and EI600 in-wall electronic timers.

Consumers trying to replace the timer's battery could place a metal object through the battery tray slot that can reach internal metal contacts, posing a shock hazard to consumers.

This recall involves the Intermatic in-wall electronic timers with model numbers ST01, ST01C, ST01AC, ST01AC70, ST01C70, ST01CL, EI600C, EI600LAC, EI600LAC8, EI600WC and EI600WC8.

This product is a lamp and appliance timer and typically takes the place of a standard wall switch. The timer is white, off-white, or almond and measures 21?2 inches high by 13?4 inches wide. Model numbers can be found on the packaging and on the instruction. In-Wall timers are included in this recall if the brand name "Intermatic" is molded on the front of the timer cover door, the timer has only four keypad buttons and there is no three-digit date code (e.g. "04C") stamped on the inside of the timer cover door. Timers with a three-digit date code (e.g. "04C") stamped on the inside of the timer cover door are not included in this recall.

Retailers and electrical distributors nationwide sold the timers from March 2007 through June 2009 for between $25 and $45.

Consumers should not attempt to change the in-wall timer's battery until they receive the repair kit. Consumers should contact Intermatic by calling toll-free at 1-877-417-4316 or by visiting the firm's Web site at www.intermatic.com.