Скачать или смотреть The smart automatic door that requires no power.

In Australia, a power-free smart automatic door has been invented. As a vehicle passes, the door automatically detects the weight of the car, and the raised ramp keeps the gate open for about 7 seconds. Once the vehicle leaves, the gate slowly closes, all without relying on electricity. This innovation solves the hassle of getting out of the car to open the door.

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