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    Motor Driven Siren 123.3dB, 3 Phase 380V/2.2kW

    Motor driven siren adopts a three phase motor and two-way alarm mode to realize emergency alarm. It has high volume 123.3dB, rated power 2.2kW (3 hp), working voltage 3 phase AC 380V, cast aluminum alloy shell, protection class IP44 and fast response time ≤3s. The rotary speed of motor driven siren is 2900 rpm.
    SKU: ATO-MDSR-2d2K
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    Delivery date: 6-12 days

    Motor driven siren has high volume 123.3dB, working voltage 3 phase 380VAC, rated power 2.2kW (3 hp) and two-way alarm mode.


    Model ATO-MDSR-JDL400
    Shipping weight 61kg
    Package dimension 75*63*71cm
    Working voltage 3 phase 380V
    Working frequency 50Hz/60Hz
    Rated power 2.2kW (3 hp)
    Output volume 123.3dB (at a radius of 5 m)
    Output frequency 500±20Hz
    Sound Continuous alarm sound (It is best to work for 2 minutes, and then stop working for 30 minutes. After the motor becomes cool, the motor alarm can work again.)
    Working mode Alarm when power on
    Shell material Cast aluminum alloy
    Response time ≤3s
    Protection class IP44
    Motor speed 2900 rpm

    Tips: 3 alarm modes of motor driven siren
    The motor driven siren is mainly used for air raid alarm system. According to specific provisions for air defense warning signal test, there are three alarm modes for air raid alarm.
    Pre-alarm: Alarm 36 seconds, stop 24 seconds, last 3 minutes.
    Air raid alarm: Alarm 6 seconds, stop 6 seconds, last 3 minutes.
    Release alarm: Continuous alarm for 3 minutes.
    When the air-raid siren stopped, it actually still makes a sound. A low-frequency humming sound is still made due to the inertia of the motor rotor. For example, pre-alarm is alarm for 36 seconds and stop for 24 seconds. In fact, what you hear is that the sound is higher in 36 seconds and lower in 24 seconds.
    Under modern air strike conditions, sometimes air raid alarms may be issued directly, so everyone must learn to distinguish the alarms, not only can understand the air defense alarm signals, but also strive to identify them as soon as possible and make corresponding protective actions.

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