Product Description: Operating Voltage:DC 12V Current:Working 40mA, Standby 5mA Frequency:12kHz-25kHz Induction Mode: Vibration induction Coverage:40 Type: for DC line,USB Charge, Battery Number of Pcs:1PC Features: Safely Repel Pests - The vehicle pest repeller effectively uses ultrasonic vibration to make repel pests and animals without killing or seriously injuring them. The frequency range is 12kHz-25kHz. Prevent Vehicle Damage - The vehicle rodent repeller repels destructive animals like mice, moles, chipmunks and martens from causing expensive damage to your vehicle's engine, wheels or interior. Park With Confidence - Use this ultrasonic pest repellent to park with ultimate faith. A coverage area over 40 square meters, your vehicle is protected from all above and underground pests. Easy To Install - you have to do is connect the two cables to the car electrical circuit. Black lead/cathode(-), red lead/anode(+). When the switch button is turned on, the product enters the self-test mode and then enters the work mode. Package Included: 1 x Ultrasonic Vehicle Animal Repeller 1 x Fixing Tool 2 x Bandages 1 x User Manual Operating mode: Low Voltage Alarm: When the power supply voltage is lower than 9.2v, the product will enter the alarm mode and emit an alarm sound of 1Hz, which will last forever. In this for case, the product does not work. Power on self-test: When the initial power is on, the product will go into self-inspection. First, the red light flickers three times, then the white light flickers three times, and then the alarm sounds. Working process: 1-15s, the red light flashes three times, then the 12k-25kHz ultrasonic wave is output, accompanied by the white LED light flashing. 16-30s, product standby. 31-50s, repeating the process of 1-15s. 51s-1min 10s, product standby. 1min 11s-1min 40s, repeating the process of 1-15s. After doing the above actions, stop 1min. Then repeat the above actions twice, stopping 3min and 5min respectively. Vibration induction: When the power supply voltage is higher than 9.2V, the product enters the operating mode. When the product detects the vibration of the car, it automatically stops working. 5 minutes after the car stops, the product starts automatically and starts working again. Installation method: Open the engine compartment cover of the car, fix the product in a proper position inside the cabin, and then connect the end of the red line with the fuse to the positive of the car battery, and the black wire to the negative . When the switch button is turned on, the product enters the self-test mode and then enters the work mode. Notes: 1. Transition: 1cm=10mm=0.39inch, 1g=0.001kg=0.0022lb=0.035oz. 2. Due to the screen difference, the color may be a little different from what you expect, please allow it.