The automotive pest repeller 5-12V uses the principle of ultrasonic wave vibrations. Ultrasonic waves attack the auditory and nervous system of most pests, effectively deterring intruders. These high-frequency waves are beyond the range of audibility for the human ear and most domestic animals. Effectively deters: mice, rats, martens, polecats, weasels, and other rodents from under the car hood. Product features: - harmless to the environment - deterrence using ultrasound (18-36kHz) and LED flashes - low energy consumption - power supply 5-12V: (4x AA batteries or USB cable or directly from car battery) - automatic switching to standby mode while driving - current consumption: 5mA - switch - replaceable fuse - dimensions: 13x7.5x3.4cm - length. conversions: 80 cm In the package: repeller zip ties for mounting USB cable wires for power from a 12V battery screwdriver package dimensions: 13.5x11.5x4 cm