Amazon Typical delivery was smooth and promptly. The installation of the device is very easy, you should get without much prior knowledge also towards. The cables are like the other reviews previously very short, so if you a Grosen engine compartment has would have to extend the cable. I have the device in a Kia Ceed installed, directly to the battery. The sound radiated into the engine compartment. The sound is heard from me, not disturbing but when the hood is open you can hear him. When the hood is closed almost did not hear the beep. Had previously desöfteren marten tracks in the engine compartment, since I've connected the device is no more. On the car roof are still some, but the engine compartment is free Marder and that was important to me. For the price which the unit cost I was only very skeptical that it ever has a benefit, but it really works. If the Gereät if it gives up the ghost once, definitely buy again.