Waking the device from sleep mode
If the display of the device is switched off, and the on/off indicator (4) is flashing every three seconds, the device is in sleep mode.
![](oxy_ex-2/common/tellus_6/graphics/0003E.png)
Carry out one of the following actions to wake the device from sleep mode:
- Press on the screen.
- Press the on/off button (7).
- Click a mouse button.
- Press a key on the keyboard.
- (Only for Tellus i6) Stare at the eye control camera until the device comes out of sleep mode.