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Keyless Entry Door Lock: you can Enter # Code # to open, unlock using Mechanical Keys(Note:the key hole is hidden by a cover). When you’re leaving, you can hold down the # Key for two seconds, then the door will be locked, no Passcode required.
Wifi Gateway/Bridge is Required for Remote Control: Basically the control should be in Bluetooth Range, if you want the remote function, Gateway is essential(Sold Separately).Then you can access the smart lock when you are away and check lock status in time.