A500 Series maintenance-free electronic padlock:

　　A 500 series lock is padlock. The lock body material is zinc alloy treated with composite plating. All electromechanical parts are sealed inside of lock body to finalize moisture protection.
The padlock can be widely used for indoor and outdoor, mobile doors, cabinets, boxes, cases….. This series locks are versatile.

A510 Series maintenance-free electronic padlock:They are low in pressure and consumption, which can be used for redeveloping live e-lock. They have substantial management functions. They are passive maintenance-free electronic padlocks which can be accessible by active e-key.

B500 electronic control padlock: This model operates with higher operating voltage, and can be unlocking with power up, so they are electronic control padlocks for redevelopment.