How do I Turn ON my Vantage Lite?
You can turn your device ON and OFF by using 3 various techniques listed below.
1. You can turn your device ON and OFF by pressing the ON/OFF button 
When you turn the device off with this button, you must turn it back on using this button.
2. Selecting the Auto Power Down 
option in the MAINTENANCE MENU 
This automatically turns the device off after the amount of time you set has passed.
When your device is idle (no key activations) for 2, 5 or 10 minutes, the backlight will dim on your display. Activate any key or switch to bring it back.
After ten minutes of dimmed backlight and no key activations, the screen goes dark. Activate any key or switch to bring it back.
We recommend that you leave Auto Power Down set to On. You can select the amount of time you want to use if 2 minutes is too fast for you.
If you change Auto Power Down to Off, the device will never turn Off unless you press the ON/OFF button on the top of the case or activate the POWER OFF key in the Toolbox. If you forget that you turned Auto Power Down to Off and the device never goes Off, the batteries will eventually go dead.
3. Selecting the POWER OFF key in the Toolbox. 
When you turn the device off with this button, you must turn it back on using this button.
If you would like to be able to turn the device off yourself but can’t press the ON/OFF button, you can go to the Toolbox and select POWER OFF or store the POWER OFF tool on your communication overlay.
To turn the device back on simply tap on the screen or activate a switch.
Note: Use POWER OFF or the ON/OFF button to properly shut down your device.
Troubleshooting Tip: If your device does not turn off or come back on as you expect it to: Press and hold the ON/OFF button for ten seconds. The device should turn on (or off).
Also if your On/Off Key has been locked in the System Lock Settings then your I/O button may not be responding. To release this lock, you must select the Temporary Unlock button on the back of the device while pressing the I/O key on the front.
Programming Note: When your device turns off, it saves any storing and/or programming that you have done up to that point. If you are doing a lot of storing/programming —perhaps setting up an overlay—make sure the device turns Off periodically so that your work is saved.