Our Anti Theft Car Device contains power chip, USB interface, LED light. It can flash the LED light when a stranger approaches the vehicle, issuing a burglar alarm. Its use is very simple: just fix it in a stable position in the car and open it to use. It can be warned by the induction system to prevent the theft of goods in the car and ensure the safety of the property. This product will only blink in the dark, and will not blink when there is enough light to maintain the efficiency and longer service life of the goods.