Ultrasonic sensors with discrete outputs and analog outputs are available as direct detection sensors.

超声波传感器的模拟输出与离散输出，并可以作为直接的检测传感器。

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All direct detection sensors that support the "Window mode" output function can also be used as retro-reflective sensors (see retro-reflective sensors).

所有直接探测传感器，支持“窗口模式”的输出功能也可以用作回归反射传感器(见镜面反射传感器)。

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All direct detection sensors that support the "Window mode" output function can also be used as retro-reflective sensors (see retro-reflective sensors).

所有直接探测传感器，支持“窗口模式”的输出功能也可以用作回归反射传感器(见镜面反射传感器)。

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