module or interwork with an extinguishant control panel to form a gas re
extinguishing alarm system. If an incident occurs, the re alarm horn strobe
generates a strong audible alarm signal once receiving the control signal to warn
onsite personnel.
Figure 7-13 Fire alarm horn strobe
Table 7-9 Technical specications of the re alarm horn strobe
Item
Specications
Blinking frequency Once each second
Alarm volume 88+ dBA at 24 V
IP rating IP66
Operating voltage 9–30 V DC
Operating current Max. 55 mA @ 24 V DC
Operating temperature –20°C to +70°C
7.11 Warning Sign
The device is connected to the release port of the extinguishant control panel or
starter. It is mounted at a prominent position on the door of the protected area.
When the extinguishant control device is started, the warning sign blinks, displays
FIRE ALARM DO NOT ENTER, and generates a sound to warn onsite personnel
away from the protected area.
FusionDC1000A Prefabricated All-in-One Data
Center
Product Description (IT Scenario) 7 Fire Extinguishing System
Issue 04 (2023-11-10) Copyright © Huawei Digital Power Technologies Co., Ltd. 111
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