Google has a Timer

Need a timer for your classroom?  No need for additional software.  No need for the clock under the document camera.

Just use Google.

In the Google search bar type in "set timer for 5 minutes" and press return, or use whatever time you'd like.

Options include to stop, and go full screen.

When timer is finished, Google will play an alarm.

A perfect easy to use clean tool for your classroom environment.