Intermatic 15 Minute Twist-Timer Time Switch - FF15MC Intermatic Model: FF15MC Timer can be set for up to 15 minutes Automatically limits the ON time for fans, lighting, motors, blowers, heaters and other energy consuming equipment Installs in standard 2 inch deep vertical junction box in place of a regular light switch Turns off auto-automatically after the pre-set time and does not require electricity to operate