Motor driven siren has optional output volume 123.3dB/125.8dB, working voltage 3 phase 380VAC, rated power 4kW (5-1/2 hp) and two-way alarm mode.

Specification:

Tips: What to do if the motor driven siren alarms during war or disaster?

1. If you hear an pre-alarm during war or disaster
   After hearing the pre-alarm, immediately pull off the power switch, turn off the gas, extinguish the fire, bring personal protective equipment and necessary daily necessities, and enter the civil air defense project or designated concealed areas. Personnel and vehicles in public places shall obey the instructions of personnel of relevant departments and go to the designated place to conceal quickly. Light regulations should be strictly observed at night.
2. If you hear an air raid alarm during a war or disaster
   When hear the air raid alarm, enter the nearest air defense covert. In case of emergency and unable to enter the civil air defense project, the terrain and features should be used to hide nearby.
3. If you hear the release alarm during war or disaster
   Hearing the alarm does not mean that the danger is no longer there. There will be other dangers such as house collapse or fire, and there may be radioactive materials, poison or bacteria nearby. Therefore, keep a clear head and carry own belongings, withdraw from the danger zone and enter a safe zone in an organized manner.