Put a warning notice in the following position to tell persons not to operate these pushbutton switches.
在以下位置上放置警告标牌以告知他人不要操作这些按钮电门。
The demonstration daughterboard contains temperature and light sensors, a three-axis accelerometer, eight tricolour LEDs, and two pushbutton switches.
演示子板包含温度和光传感器、一个三轴加速计、8 个三色 LED 以及两个按钮开关。
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