The emergency device can be equipped at the request of users, when the emergency power supply breaks , the lamp will switch to the emergency illuminating state automatically.
可根据用户要求配置应急装置，当应急电源断开时，灯具自动切换至应急照明状态。
Emergency device is available to install as required, in case of power cutting, in case of power cutting, lamp can be self-switched on.
可根据用户要求配装应急装置，当外界断时，灯具自动切换到应急照明状态。
Emergency device is available to install as required, in case of power cutting, in case of power cutting, lamp can be self-switched on.
可根据用户要求配装应急装置，当外界断时，灯具自动切换到应急照明状态。
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