<b>Pest Repellents - Pest Repeller Ultrasonic Plug in for Mice Mouse 2 Pack</b><br> 1. The product uses 12V conventional car battery power supply, no need to use another power supply, easy to install and use.<br> 2. Reverse connection protection function. Prevent the artificial connection of the circuit from causing damage to the product.<br> 3. Product power-on self-check function. When it is installed for the first time and the switch is turned on, the product enters the automatic detection function to detect the function of each component. Red light, white light, and high-frequency transmitter are detected in sequence.<br> 4. Battery low voltage detection function. The product will detect the battery voltage during operation. If the battery voltage is too low (less than 9.2V), the product will sound an alarm to indicate that the voltage is too low and will no longer work at this time to prevent battery power loss and protect the battery. When the battery voltage is restored, the product will automatically stop alarming and enter the standby state.<br> 5. Frequency conversion output. The product uses a sweep frequency output and a fixed frequency output, and the output time is also changed at intervals, which reduces the hearing resistance of mice and makes it easier to function.<br> 6. The white LED light flashes. The white LED flashes inside the car has a more shocking effect.<br> 7. Vibration detection. This product has a vibration detection function. When the car is started, it will drive the product to vibrate. When the product detects this situation, it will stop working. At this time, the mouse and other pests will not harm the car and reduce the power consumption. When the car stops and the vibration stops, the product thinks that the person has left, and automatically turns on the working mode after 5 minutes to replace people on guarding the car and protect the car from pests such as mice.