Will the cooktop turn off when the timer is up? No. The cooktop will not turn itself off when the timer is up. If using the Tasty app, when your timer is up, you should receive a notification on your phone, even if you are no longer connected to the One Top. The cooktops lights may flash, but it should continue holding the temperature as long you keep the cooktop on power levels 1-9. You would need to manually power the cooktop off after your timer expires, if not connected to the Tasty app. Note: The Tasty One Top comes with safety features that may affect certain types of cooking. For high temperature control (where the target temperature setting is above 214°F), the cooktop will run for 45 minutes. After 45 minutes, the cooktop blinks all LEDs and sounds every 5 seconds for 1 minute. During the 1 minute warning period, press the + button to continue cooking. The cooktop will automatically adjust power to maintain the desired temperature. If you do not press the + button during the 1 minute warning period, the cooktop automatically turns off.