Product Name: Hand Crank Siren, Manual Siren, Air RAID Siren (MTHOS03, LK-120) Model NO.: MTHOS03 Anti-theft Alarm System Approach: Passive Type: Hand Operated Siren Trademark: Mantern Transport Package: Standard Export Carton or OEM Package Specification: 710x371X370mm Origin: China Mainland Product Description Air Raid,Hand Operated Sirens with Rail StandHand Operated Sirenis designed to provide effective warnning in applications where there is no power supply such as:1.Civil defence.2.Camp sites.3.Mountain rescue.4.Frontier sentry and coast guard warning.5.As lightweight, it can be easily transported remote to locationsand folds up to a small size for ease of handling.Technical data:Sound Rating:120dB(A) ±2 @ 1mOutput frequency:550±20HZNet Weight: 9kgTransfer distance: 2500mMaterial:Mainly aluminum alloyFAQ:1. Why do you choose our company?We are trading company, we can help our clients to find any kinds of products in China. We are always looking for good manufacturer with good quality and good price for our clients.2. How can you guanranty your quality?EVery time we will inspect our factories first. This inspect will include the persons, the present products, their scale etc. If everything is ok, we will start to cooperate. During cooperation, we will go to the factories to test the products to guanranty the products has good quality. If it doesn't meet our requirement, the goods will be refused.3. Do you have price advantage?For us, the quality is our first consideration. And the second consideration is the price. We couldn't say we have the lower price, because of quality issue. We need to say we have the best price.4. How long do you do the export business?For our company, it starts in 2012. And for our sales persons, they have 8-10years experience to do the international business. They understand each step for the export and do good service for each of our clients.