有时会使用电池供电。

Sometimes batteries are used instead.

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尽量使用电池供电的灯笼或手电筒。煤油灯，火把，蜡烛，火柴等，很容易翻倒或者自燃引起火灾。

Use battery-powered lanterns or flashlights to inspect your home. Kerosene lanterns, torches, candles, and matches may tip over or ignite flammables inside.

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如果使用电池供电，点摁此按钮后，显示屏仅显示10秒钟(在主要操作时，显示屏始终明亮显示的)。

Pressing this button will also illuminate the display screen for 10 seconds if power unit is in battery operation (screen will always be illuminated in mains operation).

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