A single red LED shows that the power is switched on.
单支红色发光二极管表示电源已接通。
There are two LED indicators on the front panel : Power and Battery Charge.
有两个LED指示灯前面板：电源和电池充电。
Constant flow rate manually adjustable by control dial on the front panel, Power-ON led indicator.
通过控制面板上的调节旋钮可对流量进行手动调节，还带有电源指示。
Constant flow rate manually adjustable by control dial on the front panel, Power-ON led indicator.
通过控制面板上的调节旋钮可对流量进行手动调节，还带有电源指示。
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