WIDE APPLICATION: This electronic door lock is widely used in express delivery cabinets, mailboxes, lockers, storage racks, store shelves, filing cabinets, drawers, meter boxes and other crowded places ULTRA-THIN DESIGN: This product adopts ultra-thin design, small and exquisite, easy to install, safe and stable. the lock body is made of iron material, hard and stable! EASY TO USE: Its working method is to power on and unlock the door lock, which is very convenient to use, low power consumption, voltage 12v, current only about 400 ma, and the power supply is immediately triggered! DURABLE: It has a long service life, 100,000 aging tests, long service life, high safety, anti - vibration, anti - prizing, anti-drilling and anti-technology open design! Suitable for various container products. PERFECT SERVICE: We solemnly promise you that if you find problems with the product itself, you can contact us in time. we will definitely give you a reply in the first place and return it for you. please feel free to use it., Manufacturer: Dioche