SY-200B is of high alarm frequency, strong penetrating sound power and large sound voerage. The characteristics of the SY-200B are convenient operation, energy saving, easy to carry, compact structure, small volume, light weight, etc.

1.Define

  Alarms including hand alarm, electric alarm , each  place for emergency warning, only hand alarm without power support, powered by turning a crank issued a warning  signal effectively. Sound speed depends on the handle moved. Baffle the shutter  mechanism is set in the sound window, can select the sound intensity signal, quickly  closed the window, blocking, produce different signals.

2 . principle of working

Driven by turning a crank wheel at high speed, when the wheel turns, into the air  from the side of the tuyere wheel, high speed and high pressure to set the wheel on absorption of air of resonance in the window of the base and at the same time.

3.Using range

Water conservancy, flood control, reservoir, civil defense, forces, fire control, prisons, mining, gas stations, ships, airport, plains, pasture, forest farms, factories, schools, hotels, hotel and open barracks, the mountain rescue the enterprises and institutions,  etc.

4.Product features

Without the power support, compact structure, removable, light weight, easy to carry,  sound intensity can be adjusted and produce different signals, low frequency, wide  scope of application, etc.

Applicable occasions:

Used for emergency warning,easy to carry,mainly used in flood control,disaster,forest fire,military military supplies,public and industrial applications to respond to emergencies alarm use.

Due to lightweight the sirens can be easily transported to remote locations and folded up to a small size for ease of handling.

Home-Alarm-Warning light-Counter