GB 51309-2018 第3.2.7条
| **** | Continuous operating time: In hotel buildings (which are crowded places), after the system starts in emergency mode, the continuous operating time powered by battery shall not be less than 0.5 h (30 minutes). |
| **** | Continuous operating time: In hotel buildings (which are crowded places), after the system starts in emergency mode, the continuous operating time powered by battery shall not be less than 0.5 h (30 minutes). |
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