After almost 1.5 years time, an interim report: The hand-held transmitter (there are two equal in use) perform reliably and flawlessly, every day their work and still first with the battery. After me one of the hand-held transmitter is repeatedly fallen down (transmitter is connected with a key ring on my key ring), he has one day does not work anymore. The reason was a slightly shifted battery inside. After the hand transmitter Open (unscrew the three small Phillips screws), the battery and re-close the housing straighten, he immediately work again. Thus, it was confirmed that remain after a power interruption, the stored frequencies.
The extremely useful filler cap of the handheld transmitter is now unfortunately a little worn out by the frequent opening and closing. I refer to the latching of the cover when closing. Although the detent is still present but keeps the lid no longer so secure in his position. This means that the lid in his pocket opens from time to time on its own. An unintentional operation of the keys but I could not see why. The nickel / chromium layer on the metal frame has become almost disappeared on one of the transmitter and the metal frame now has a copper color. It must be concluded that it is normal steel, which was initially electroplated copper-plated and nickel-plated to conclude with. In itself a good and common method for surface finishing. That the nickel / chromium layer is now gone, but is less the product or the surface quality, but rather the fact that I have a lot of keys to my covenant, which lead to mutual wear surfaces. The other station is located in the car and looks like new.
For Auffädelung the transmitter on a keychain, it would be better if the manufacturers would use here as a stainless steel frame material, but the price would be certainly much higher. I do not mind that, but I would like to mention.
Conclusion: still a great product!
Important complement to the product in relation to the review: Obviously change the supplier / seller, unpredictable, sometimes the products and the pictures of the products offered. The adventitious See my review here, I introduced today firmly (01/09/2014) that the product, which is the subject of my review, does not coincide with the product pictured and currently offered by suppliers / retailers. At the same time the product described by me but is offered at Amazon. Only found there not my review.
Just so it does not result in confusion: the reviewed product I consists of a revolving, nickel / chrome-plated metal housing. The bottom and top are made of plastic and are bolted together with three small Phillips-head screws. On the top of a metal plate is incorporated, which includes four, almost flat incorporated pushbuttons. Button A and B next to each other and including key C and D together. The A and B buttons are larger than the C key and D. The whole keypad is operated with a sliding plastic cover against accidental, displaced closed !!! I would here like to integrate a "link", but unfortunately does not appear to rely on the fact that the written reviews, the long term, the product in question, be sure to assign. Please note.