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Can also be used to external lighting and signal device and vehicle lamps shell protection.
也可用于外部照明和信号装置及汽车灯具外壳防护。
Periodic check the breaker, switchgear, operation unit, protection device, transformer, capacitor, UPS, lighting fixture working status;
定期检查各开关，操作机构，保护装置，变压器，电容器，UPS照明设施等设备的工作状况；
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