Suzhou Delong Inc.  

Chinese patent, original product in the world, any imitated actions will be punished by law. Hereinafter is the introduction of automatic coding series products with guard against theft and alarm function.
Advanced aptitude lock with guard against theft and alarm function.
These products use the technology patent of new automatic coding, very convenience and don?t need use the key, the host can change or set any on-off code among one hundred codes any times, it can automatic distinguish the host or not and with the reliability of safety、prevent  saw、prevent knock、prevent prize、prevent break. And the same times with advanced  practicality that the alarm sound is bigger than one hundred dB once motion, and host just need use a couple of  ?AAA? batteries---very economy (stay electrical current less than 0.02MA,dynamic electrical current less than 150MA)
The difference between this product and the traditional locks are : the traditional locks  can not alarm  the police if been prized and destroied , but these products set aptitude sensor, it will be alarm the police by automatic once the difference circs happened, let the effractor feel nervous and the host belongings safety will be protected and avoid things stolen, it?s more science and rationalization than any other kinds locks in existence. It?s simpleness and convenience to change or set on-off code(the code of factory leave is ?0? ) in original setting estate, when use please transit  the back cover and pull out ?A---B?, replacement to ?A? after setting your code .