电源开关指示灯，显示实时工作状态；三重安全保护装置：水开自动断电、干烧保护、熔断保护；

Indicator light of power supply indicates the working state3-level protection system:Automatic switch off, Boil-dry protection, Fusing protection.

youdao

电源指示灯是亮的，并且正常工作，但是为什么声音就是出不来呢?。

Thee power indicator was on, and it was running, but somehow the sound didn't come through.

youdao

仪器上的电源开关未开启时，仪器也就不能进入工作状态，高压指示灯也不可能亮起。

When the power of the instrument is not started, it can not enter the working status.

youdao