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Loudly Siren Alarm System Security Air RAID Motor Siren

China Loudly Siren Alarm System Security Air RAID Motor Siren, Find details about China Hand Siren, Portable Alarm from Loudly Siren Alarm System Security Air RAID Motor Siren

Model NO.
DH400B
Transmission Mode
Wireless
Alarm Volume (within 1m)
145
Receive Frequency
1500W
Trademark
FORWARD
Transport Package
Carton Box
Specification
65*45*55CM
Origin
Hebei
HS Code
8531100000
Model NO.
DH400B
Transmission Mode
Wireless
Alarm Volume (within 1m)
145
Receive Frequency
1500W
Trademark
FORWARD
Transport Package
Carton Box
Specification
65*45*55CM
Origin
Hebei
HS Code
8531100000




Loudly Siren Alarm System Security Air RAID Motor SirenLoudly Siren Alarm System Security Air RAID Motor SirenLoudly Siren Alarm System Security Air RAID Motor SirenLoudly Siren Alarm System Security Air RAID Motor SirenLoudly Siren Alarm System Security Air RAID Motor Siren






Product Parameters
Styleelectric alarm
Sound pressure130db
Audio frequency600±20 Hz
Power4000w
weight113 kg
Transmission distance8km
Packing size76*54*70cm
ColorAs picture color
MOQ1PCS
Packaging DetailsCarton package or as your requirement for Hand Operated Siren
UsageAlarm device,Civil defence siren
Busniess Type Manufacturer
Market worldwide
 Product Description
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

Hand operated siren  DH-300B is designed to provide effective warning in applications where there is no power supply.
Powered by rotation the handle,this model has a plate to shut off the sound once up to speed giving it the ability to produce different tones
Robust and compact,the siren can be easily transported to remote locations and folds up to a small size for ease of handling


Features : 
no power supply required 
robust and compact for portability 
powerful low frequency sound
universally recognised signal 
Shutter mechanism to provide a choice of signals:continuous and warble 

Application: 
Camp site,civil defence,mountain rescue,coast guard warning,quarries/mining
 

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