1. When purchasing fire emergency lights, we should pay attention to the products of regular manufacturers. In order to reduce the cost, some counterfeit products mostly use inferior components, which will break down frequently in a short time, causing undue losses to consumers. Pick it up and shake it a few times during selection, and check whether the fixed parts of the internal storage bottle and power transformer are firm. If there is a sound inside, it indicates that the internal components are loose, otherwise, it indicates that they are well fixed.

2、检查功能开关是否正常。将开关置于双荧光灯档位.这时两支灯管应立即同时点亮，且亮度一致而无闪烁现象。把耳朵贴在灯壳上，仔细听一下内部的升压变压器是否有漏电现象，如果有漏电现象，升压变压器会产生“滋滋”的响声。

2. Check whether the function switch is normal. Place the switch in the dual fluorescent position At this time, the two lamps shall be lit at the same time immediately, and the brightness shall be consistent without flickering. Stick your ear to the lamp shell and listen carefully to whether the internal step-up transformer has leakage. If there is leakage, the step-up transformer will make a "Zizi" sound.

3、接通电源，充电指示灯应点亮，听听内部电源变压器是否有因铁芯松动而产生的“嗡嗡”声。

3. When the power is turned on, the charging indicator light should be on to listen to whether the internal power transformer has a "buzzing" sound caused by loose iron core.

4、使用应急灯要注意，灯光发暗、荧光灯启动困难时应立即进行充电，一次充电约需14个小时。长期不用时，应3个月充一次电，时间约为8小时。

4. Pay attention to the use of emergency lights. When the lights are dim and the fluorescent lights are difficult to start, they should be charged immediately. One charge takes about 14 hours. When it is not used for a long time, it should be charged once every 3 months for about 8 hours.

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