Specification Brand : Boxwizard BulletPoint1 : robust material housing made of metal for maximum strength and durability. BulletPoint2 : siren alarms, and clear alarm the hand cranked siren generates sound of 120db that be heard from 4 mile away, providing effective early warning during emergencies. BulletPoint3 : hand crank siren, the shell is made of metal, providing maximum strength and durability. BulletPoint4 : metal construction made with high quality metal housing, this hand crank siren is built to withstand use and provide maximum strength and durability. BulletPoint5 : working principle: hand held alarm, easy to operate, just turn the handle to sound the alarm. by manually rotating the handle, the of the step by step acceleration to achieve the purpose of sound, the sound on the rotation of the handle BulletPoint6 : Name:Personal Alarmproduct Color:Orangematerial: Abssound: 125 Dbproduct Size: 7*4Cm/2.8*1.5Inchproduct Weight: 30G/0.62Lbsthe Package Include:1 X Personal Alarm Color : Orange IncludedComponents : No ItemName : Hand Crank Siren Red Portable Manual Operated Alarm for Schools Troops Alarming 120DB ItemPackageDimensions_Height : 17 centimeters ItemPackageDimensions_Length : 18 centimeters ItemPackageDimensions_Width : 18 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : security-sirens ItemTypeName : Horns & Sirens Manufacturer : Boxwizard ModelName : Boxwizardbxnsrgpf7d ModelNumber : Boxwizardbxnsrgpf7d NoiseLevel : 120 decibels NumberOfItems : 1 PackageLevel : unit PartNumber : Boxwizardbxnsrgpf7d Pattern : Patterned ProductDescription :
Specification: Item Type: Hand Crank Siren Type: Hand Operated Sound Type: Siren Construction: Metal Housing Size: Width: Approx. 5.51in Height: Approx. 9.09in Depth: Approx. 7.95in Decibel: 120db Size: Approx.11cm / 4.3in 23cm / 9.1in Product Description: 1. The portable alarm is a hand-cranked sounder that does not require power support. It is called differently due to local differences. 2. Including handle, gear speed increasing mechanism, slider, fixed wheel, ringing wheel, sound window cover, , box frame, the handle is connected with the driving shaft of the gear speed increasing mechanism, and the output shaft of the gear increasing mechanism passes through The pin is connected with the sliding block, and the sliding block is connected with the flange of the impeller by friction . 3. There is no need for power support, and the power is provided by shaking the handle to make the alarm send out an alarm . The sound level depends on the speed of the hand. 4. In terms of and purpose, it is divided into fixed hand-operated alarm and portable hand-operated alarm. 5. Hand-cranked alarm is light in weight, easy to carry, can be detached, and the handle will sound an alarm. 6. Widely used in factories, schools, troops, special flood control, disasters, open barracks, air defense and other emergencies. 7. Can effectively provide timely early warning during the incident and reduce people's property losses and casualties.