PEDEA Tablet PC case black for 8.9 inches (22,6cm) with accessory compartment
had bought these fit
CSL Ultra Slim Bluetooth Keyboard 26070 (black and silver)
or
CSL Ultra Slim Bluetooth Keyboard 25613 (white-silver)
prima inside.
The device worked perfectly:
Turn on Bluetooth on your tablet and keyboard
Press on keyboard Connect
'Looking at Tablet Settings' Wireless & Network' Bluetooth device
There is an info box displayed with a number which is on the keyboard in order to enter Paring and confirmed by Enter
Finished!
For me the keyboard was, however, initially set to QWERTY. I then
on settings 'users' Language & input 'Mental keyboard *' German Android keyboard set.
* This point was at my Tablet (Android 4.4) in addition below (not in) the menu item keyboard & input devices available.