This product uses steel plate for shell and carbon steel for inner material, builtin unlocking status detection. The electric lock apply for delivery locks, refrigerated cabinet, mail or newspaper box, selfservice lock, book counter, changing clothes cabinet etc. Sturdy and safe to use. Features: Easy to install, compact, no left, right, front, reverse side limitation, and allowing mechanical lashup unlocking position. The electric lock is mainly adopted carbon steel material, sturdy and safe to use. High safety factor, latch hook can bear 150kg traction, won"t obvious deform permanently, shockproof, anti prying. Self Elastic Design, adjustable, suitable for weight 0.5~4kg door. Wide application scope. Fit for delivery Lockers, refrigerated cabinet, mail or newspaper box, SelfService Locker, Counter, Changing Clothes Cabinet etc. Specifications: Condition: 100percent Brand New Main Material: Carbon Steel Surface Treatment: Plated Electrophoretic Paint (Neutral frog experiment over 500hours) Work Mode: Independent type (Power off and close the doorLocked; Power onUnlocked) Electrical Parameters: DC 12V 2A Mechanical Life: In Designing Load Condition, about 500000 times Electromagnet Life: In Rated Working Condition, more than 1000000 times Strength of Lock Hook: 150kg force ( No permanent deformation) Ambient Temperature: 40 celsius ~60 celsius Size: Approx. 5.9 * 7.3 * 1.3cm 2.3 * 2.9 * 0.5in Package Weight: 162g5.7oz Package List: 1 * Electric Lock (Without Detecting Switch)