Therefore, I decided to buy the Logitech Presenter R400, but he offered a favorable price-performance ratio. On the gadgets of R600- or R800 Series (buzzer alarm, LCD display) can I do without in prices.
The accompanying manual is as short as superfluous - all operating elements are self-explanatory The hardest part was actually, to get the device from the Harplastikverpackzung :-).
The R 400 is with its slim pear shape comfortable to hold. The keys are all different in size and safe to feel even in the dark - I've never confused.
The recipient (for a USB port on the PC) is stored conveniently in a drawer of the presenter and works without installation right away (in Windows XP, Vista). He is real hot-plug, so can be easily inserted even with highly been run like a computer memory stick.
The first time the presenter shows a clear battery indicator reliably the battery voltage and protects against unpleasant surprises during the presentation.
In addition to forward and reverse buttons and the button for the red laser pointers are a key at the bottom right "black screen" and a "Start Presentation" for the lower left corner. The latter turns into PowerPoint between "outline mode" and "full screen mode" back and forth - which is quite useful when you view during the show the outline or wants to read notes under the slides.
The range of 15 m I can only confirm; the connection between presenter and Laptop / receiver works even through barriers or without visual contact with the computer (I had to turn it off again * under * a lectern shelf) quite outstanding.
Overall, a great tool for PPT presentations: reliable, simple and at a reasonable price.
