[Ultrasonic Mouse Repeller] This ultrasonic pest repeller uses an intelligent microelectronic chip with specially designed ultrasonic waves (12-24 KHz) and LED flash light. It effectively stimulates and disrupts the brain and hearing system of mice and other pests in the control area, causing fear and discomfort. They then run away quickly. [LED Flashlight Function] In the dark, rats and minks are afraid of bright lights and flashes. The ultrasonic mouse repeller has a dazzling LED bulb composed of red light and white light. It prevents unwanted animals from entering cars and garages. [Harmless to humans] The device emits high-frequency sounds at different levels that are inaudible to humans. Made of heat-resistant, non-toxic and safe materials, the ultrasonic car repellent is quiet, non-toxic and safe for humans, pets and non-rodent animals. [PEST CONTROL] No more messing around with cables! Protect your car from rodent damage with this ultrasonic mink repellent. You can leave it outside with confidence. [EASY INSTALLATION] The mounting hardware and wiring connect to your car's electrical circuit and work whether the car is off or not. 1, The product uses a 12V car battery, there is no need to use another power source, it is easy to install and use. 2. Reverse connection protection function. Prevent artificial reverse circuits from damaging the product. 3. Product startup self-test function. When installing for the first time, open the switch, the product enters the automatic detection function, detecting the function of each component whether it is good or bad. Red light, white light, high-frequency transmitter head are detected in turn. 4. Battery low voltage detection function. The product detects the battery voltage during operation. If the battery voltage is too low (below 9.2V), the product will sound an alarm, suggesting that the voltage is too low, and no longer work to prevent battery power loss and protect the battery. When the battery voltage is restored, the device will automatically stop the alarm and enter sleep mode. 5, frequency conversion output. The product uses swept frequency output and fixed frequency output, the output time is also the interval change, reduce the mouse hearing resistance, easier to work. 6White LED light flash. Inside the car, the white LED light flash has a more scary effect. 7. Vibration sensing. This product has a vibration sensing function. When the car starts, the product will vibrate, it will sense the situation and stop working, which can prevent rats and other pests from endangering the car, while reducing power consumption. When the car stops, the vibration stops, the product thinks that people have left, 5 minutes after the automatic opening of the working mode, instead of people guarding the car, to protect the car from rats and other pests. Note: The data are all manually measured, please allow 1-3cm error due to differences in light and display, there may be some color differences, please refer to the actual item received.