If you don't dim the backlight, it will slowly dim to off when the keyboard is 
not used for a couple of minutes or so.  Then when you begin to use it again, 
the backlight will come back on.  If you want it off while you are using it, 
then press the sixth key on the top row four of five times.  After doing that, 
I think it will stay off until you turn the keyboard off and then on again.  

I don't know of any way to turn the backlighting off permanently.  


  David Justice :) 


> On Jun 18, 2015, at 11:33 AM, "Fazil" <fzlmahmoo...@gmail.com> wrote:
> 
> Thank you very much, Mr. Justice, that explanation, indeed, is very helpful.
> Can I turn off the back light permanently by using key6? I want it off.
> Thanks again.
>  
> From: viphone@googlegroups.com [mailto:viphone@googlegroups.com] On Behalf Of 
> David Justice
> Sent: Thursday, June 18, 2015 5:41 AM
> To: viphone@googlegroups.com
> Subject: Re: Logitech K810 Bluetooth Keyboard?
>  
> 
> 
> At the moment I'm using my K810 with iOS7.x, but believe what I describe 
> below is the same with iOS8.3. 
> 
> 
> On the bottom row: Control, Function, Command, Option, Space bar, Option, 
> Control, and the arrow keys.
> 
> 
> Hold down the Control and Option key and press the letter K to enter 
> VoiceOver help mode.  You can leave this mode by pressing the Escape key 
> which is the first key on the top row.  While in VoiceOver help mode you can 
> press a single key or combination of keys and VoiceOver will tell you what 
> they are or do.  Not all keys or key combinations will be described.  For 
> example, except for the Escape key, the keys in the top row, by themselves, 
> will not be described.  
> 
> 
> There are 15 keys on the top row.  Below I will give a number to each and 
> describe them as I remember. 
> 
> 
> 1: Escape. 
> 2, 3, and 4: Switch to paired device 1, 2, or 3. 
> 5: Unknown. 
> 6: Reduce back lighting. 
> 7: Increase back lighting. 
> 8: Play/Pause. 
> 9: Mute sound. This includes VoiceOver. 
> 10: Volume down. 
> 11: Volume up. 
> 12: Home button. 
> 13: Display or hide on-screen keyboard. 
> 14: Unknown. 
> 15: Delete. 
> 
> 
>  
>   David Justice :) 
>  
> 
> On Jun 17, 2015, at 8:27 PM, "Fazil" <fzlmahmoo...@gmail.com> wrote:
> 
> Hi, list.
> I have just purchased my Logitech K810 Bluetooth keyboard.
> Do we have any key describer mode for this keyboard? If yes, how can I 
> activate/deactivate that, please?
> Or, can someone describe the keys on the top row and either side of spacebar 
> for me, please?
> Thanks!
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