The paper presents the principle and realization of voice alarm composed of EX44B0 board integrating ARM microprocessor and the voice chip ZY1420A.

介绍了由集成ARM微处理器的EX44B0开发板和语音芯片ZY1420A组成的语音报警系统的原理与实现过程。

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If controller is linked with alarm output and network fire control expansion board, it can also drive alarm annunciator calling to deter crime and warn the security guard.

如果控制器接了报警输出及消防联动扩展板，还可以现场驱动报警器鸣叫，威慑犯罪人员和提醒保安赶来。

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Apply to relay Box for alarm indicator connecting between several alarm indicator column and alarm indicator board.

用于继电器箱与多个警报指示柱，警报指示器板间的连接。

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As a precaution on board the general emergency alarm was promptly sounded, all passengers and crew members, and those not involved in emergency management, went to muster stations with the safety equipment required.

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Those on board reported a burning smell in the cabin, and an alarm indicated smoke in a forward electrical compartment.

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