When your device has been located on a map, you will see a couple of options presented in your device’s info box. The first option is Ring.
Tap this option and a floating window will appear stating that your device will ring at full volume for five minutes. If you have lost your device nearby then this should be ample time to locate it based on the ringing tone it emits. Tap on the Ring option again and the device will instantly start sounding a high-volume
alarm to help you track it down. To stop the shrill, just tap on the Ring option again and it will desist.