User's Manual
2.2 Special operation modes of the keyboard
Sleep-Mode
When 30 minutes happens no input in your keyboard respectively touchpad, the keyboard
turns automatically into Sleep-Mode (idle state) to save battery capacity.
Wake up-Mode
For activating the keyboards from Sleep-Mode press any key on your keypad
(not the left or right mouse function key of the touchpad or the touchpad itself!).
Reconnect-Mode
After reactivation the keyboard connects automatically again with the USB receiver.
Depending on environmental conditions for the radio transmission it needs for that
between less than 1 second up to few minutes.