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Features:
*No hole design, open or close with a remote control, completely overcome traditional lock's shortcomings, realized real security.
*Dual Circuit, dual system, work Independently. Using standby system to unlock when main system is broken down.
*Two lock/unlock modes optional: Remote control lock/unlock & indoor touch manual switch lock/unlock.
*When the battery is low, buzzer alarm, means that changing batteries is necessary.
*No drills needed, easy installation on all kind of doors, very convenient.
