Inside is installed AC contactor, thermal replay, self - settable conversion switch.

内装交流接触器 、 热继电器 、 自复位万能转换开关或按钮等.

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Beta - Gamma - complete , includes settable timer and sensor ( light beam ), with dynamic background subtract.

总成.可设置定时器和光束传感器.动态本底扣除.

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