Depending on how your smoke alarm is powered (9-volt, 10-year lithium, or hardwired), you'll have to maintain it according to manufacturer's instructions.
看你所用的烟雾警报器的电源来源为何(9伏特、10年锂电池或硬件接线)，你必须依照制造厂商的指示维护保养。
Depending on how your smoke alarm is powered (9-volt, 10-year lithium, or hardwired), you'll have to maintain it according to manufacturer's instructions.
看你所用的烟雾警报器的电源来源为何(9伏特、10年锂电池或硬件接线)，你必须依照制造厂商的指示维护保养。
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