Logitech K800 Wireless Illuminated (920-002395) [12/102] Keyboard backlighting

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Getting started with

Keyboard backlighting

When you switch on the keyboard, all keys are backlit at full intensity

for ﬁ ve seconds. The backlighting adjusts itself automatically based

upon the ambient light in your room.

To activate backlighting, move your hand over the keyboard, or press a key. There is a proximity

sensor in the keyboard that detects motion and switches on backlighting.

Backlighting remains on while you charge the keyboard. When keyboard battery power is very low,

the lower battery LED blinks red and backlighting is switched off to conserve battery life.

Press FN + F5 to decrease backlighting and FN + F6 to increase it. There are ﬁ ve levels of

illumination: 0%, 25%, 50%, 75%, and 100%. More battery power is used as the level of illumination

is increased. After three hours of inactivity or if the keyboard is restarted, the backlighting level

returns to automatic adjustment.

Recharging the keyboard

Typically, you can expect about 10 days of battery life

before you will need to recharge the keyboard battery.*

If the backlighting level is set to 100%, you have about

15 hours of battery life.

To recharge the keyboard, connect it to your computer

using the USB recharging cable. A full battery recharge

takes about 5 hours and only 3 hours if the keyboard

has been switched off.

* Battery life varies with usage, backlighting level, and computing conditions.

Heavy usage usually results in shorter battery life.