?Theft occurs everywhere. If you&acute;re seeking for a reliable and useful alarm lock to protect your personal and property safety£¬ I&acute;m sure this Copper Steel Electronic Hanging Type Alarm Lock can do a great favor. It&acute;s made of solid and high quality copper and steel so that it&acute;s long-lasting and hard to "be conquered" by thieves. And it owns both alarm and mechanical lock functions to offer you excellent performance. Also£¬ this alarm lock delivers low false alarm rate to prevent lockpicking and moving. A trustworthy safeguard widely used in bicycle£¬ storage battery car£¬ tricycle£¬ traversing gate and so on!                                    Features             Made of solid and high quality copper and steel<br> No noise£¬ environmental-friendly and energy-saving<br> Anti-rust£¬ anti-corrosion and wear-resistant£¬ easy to repair<br> No magnet residue£¬ water proof£¬ acid and alkali proof<br> Own both alarm and mechanical lock functions to offer you excellent performance<br> Deliver low false alarm rate to prevent lockpicking and moving<br> Widely used in bicycle£¬ storage battery car£¬ tricycle£¬ traversing gate and so on<br>                                                            Specifications            Material    Copper£¬Steel    <br>Color    Black    <br>Power Suppley    6 x AG13 Button Cell    <br>Alarm    110dB    <br>Opening Mode    Mechanical Locks Key    <br>Usage Scope    Bicycle£¬ Storage Battery Car£¬ Tricycle£¬ Traversing Gate etc    <br>Dimensions    (2.76 x 1.3 x 3.86)" / (7 x 3.3 x 9.8)cm (L x W x H)    <br>Weight    14.18 oz / 402 g    <br>                                                            Package Includes            1 x Alarm Lock3 x Key6 x AG13 Button Cell