Battery-operated high-voltage device (2 x 3 V lithium button cells CR2477) with 6 stainless steel double contact plates, combined with ultrasound from high-quality piezo speakers and LEDs. This device has all the advantages of high-voltage devices 6 and 7 Plus-Minus. It no longer requires a hood contact switch, as it can be turned off directly on the device. The new sensor technology detects whether the vehicle is in motion and switches the device off. Once the vehicle is stationary, the device is turned back on. The flashing indicator light shows that there is sufficient voltage and additionally irritates the marten. All of this is achieved without any electrical connections to the vehicle.