JT702 is a electronic lock supported onlineand offline keyboard unlocking. The main feature includes online unlock bysystem and dynamic password from APP. After acquisition of dynamic password, italso supports offline keyboard unlock,which can solve password-receiving failureor unlock-failure.Meanwhile, the separating lock-rope design is replaceable foroptional length,multi-door and fully-covered door, which can prevent illegaldismantling. It can be applied in management of containers, trailers,van truck.