1. [WIDELY USE]Self Elastic Design: Elasticity adjustable, suitable for weight 0.5~4kg door, with built-in unlocking status detection.This lock is widely used in storage cabinets, mailboxes, logistics cabinets, filing cabinets, vending machines, shoe cabinets, etc. Usually used in schools, community stations, hotels, factories, supermarkets and other places. 2. [ADEQUATE SECURITY]Our latch hook can bear 150kg traction, won't obvious permanent deform permanently, shockproof, anti prying, in Designing Load Condition, Electromagnet Life is more than 1,000,000 times(Electrical Parameters: DC 12V 2A) 3. [EASY TO INSTALL]Compact, easy to install, no left, right, front, reverse side limitation, and allowing mechanical lash-up unlocking position, in Designing Load Condition, Mechanical Life is about 500,000 times(Size: Approx. 5.9 x 7.3 x 1.3cm / 2.32 x 2.87 x 0.51inch) 4. [STURDY MATERIAL]The electric lock is mainly adopted carbon steel material, amd the surface is electroplated electrophoretic paint, strong and to use