There are three ways to switch off the alarm. * 24 HOUR ALARM RESET - Press ALARM RESET during the alarm call if you want the alarm mode to be stopped immediately but also wish to retain the same setting for the following days * CANCELING THE ALARM COMPLETELY - Adjust the ALARM to the OFF position before or as it goes off * REPEAT ALARM - Press SLEEP OFF/REPEAT ALARM during the alarm call, it will repeat your alarm call at 8-9 minute interval. You can repeat if desired for up to 1 hour and 59 minutes.