Smeg SA304X-8 Operating And Installation Manual page 19

Instructions for the User
TIMER KNOB (on some models only)
To set a cooking time, turn the knob
clockwise to select the desired value in
minutes. At the end, a buzzer will
sound and the cooking process will be
interrupted.
To start cooking with any of the functions, a cooking time must be set or the
timer knob must be turned to for cooking processes which are not timed.
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