This product uses steel plate for shell and carbon steel for inner material, built-in unlocking status detection. The electric lock apply for delivery locks, refrigerated cabinet, mail or newspaper box, self-service lock, book counter, changing clothes cabinet etc. Sturdy and safe to use. Specifications: Condition: 100% 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 door-Locked; Power on-Unlocked) 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: -40~60 Size: Approx. 5.9 * 7.3 * 1.3cm / 2.3 * 2.9 * 0.5in Package Weight: 162g/5.7oz Package List: 1 * Electric Lock (Without Detecting Switch) About this item Self Elastic Design, adjustable, suitable for weight 0.5~4kg door. The electric lock is mainly adopted carbon steel material, sturdy and safe to use. High safety factor,l atch hook can bear 150kg traction, won't obvious deform permanently, shockproof, anti prying. Easy to install, compact,no left, right, front, reverse side limitation, and allowing mechanical lash-up unlocking position. Wide application scope. Fit for delivery Lockers, refrigerated cabinet, mail or newspaper box, Self-Service Locker, Counter, Changing Clothes Cabinet etc. Self Elastic Design, adjustable, suitable for weight 0.5~4kg door. The electric lock is mainly adopted carbon steel material, sturdy and safe to use. High safety factor,l atch hook can bear 150kg traction, won't obvious deform permanently, shockproof, anti prying. Easy to install, compact,no left, right, front, reverse side limitation, and allowing mechanical lash-up unlocking position. Wide application scope. Fit for delivery Lockers, refrigerated cabinet, mail or newspaper box, Self-Service Locker, Counter, Changing Clothes Cabinet etc.