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 turns off the device. Once the vehicle is stationary, the device is turned back on. The blinking indicator light shows that sufficient voltage is present and additionally irritates martens. All of this is achieved without any electrical connections to the vehicle.