Is there an alarm in every community?

A: Yes. The air defense alarm device covers the whole city, and there are air defense alarm devices on the roofs of residential quarters, institutions, high-rise buildings and large residential quarters.

Air defense alarm can be divided into three modes: early warning, air raid alarm and disarming alarm. In peacetime, air defense alarms have new uses, such as public holidays and September 18th anniversary, to warn people not to forget history.

The site selection of civil air defense projects is a problem faced by every residential project. There are two options: scattered in the projection range of each residential building, or concentrated in the underground garage. Anyway, there are loyal fans. So how to choose in the actual project?