| 摘要 |
Expendables replacement time indicator for automotive vehicle in which a driving pulley rotating as a transmission is actuated and rotating pulleys for counters are driven by a timing belt, and the O number of a numbering of the counters is made of a transparent material, and light-emitting and light-receiving diodes are provided to its both sides, and the lifht-emitting diode is connected to an oscillator, and a piezo and the light-emitting diode are actuated by an output of the oscillator.
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