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SG-4B鳴音器具有自動或手動發訊功能，可發出“通用緊急報警、活在報警、手動報警”等不同的報警型號，并具有報警優先級，可接擴音機發出的緊急講話信號而暫停報警，一旦該信號撤銷后，繼續原狀態。通用緊急報警器具有霧笛、警報指示器接口，并具有遙控報警輸入接口。通用緊急報警器還具有背景光照明及調光功能，利于夜間操作。
The general emergency alarm panel has automatic and manual alarm function.Such alarm signals as "GENERAL EMERGENCY ALARM,FIRE ALARM AND MANUAL ALARM"and have very priorities.The PA amplifier’s emergency speech signal can pause alarm system.Once the signal is cleared.The alarm panel will return to original.The interfaces for the fog horn and the E/R alarm indicator column are available.The input interface for remote control alarm is also available.In addition,the signal panel is characterized by back light and dimmer,in order to operate at night.
采用標準：
符合《鋼質海船入級規范》（2006）及其2007修改通報第4篇，第2章，第9節，第2.9.1款MSC.48(66)決議附件《國際救生設備（LSA）規則》第VII章第7.2.1條IMO A.830(19)決議《（1995）警報器和指示器規則》
Adopt standard
Item 2.9.1 Section 9, Chapter 2,Part 4 of CCS Rules for the Classification of Sea-going Steel Ships(2006),and its 2007 Amendments
Item 7.2.1 Chapter Ⅶ of INTERNATIONAL LIFE-SAVING APPLIANCE(LSA)
CODE-ANNEX of RESOLUTION MSC.48(66)
IMO RESOLUTION A.830(19) CODE ON ALARMS AND INDICATIONS,1995
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