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SF-M818 bluetooth smart lock is the new smart lock which support mobile app/password/Rfid cards unlock ways, the user can grant smart lock eKeys to friends, track unlock history, manage user access, & monitor in real-time. M818 bluetooth smart door lock adopts simple streamline shape, large size capacitive touch button, it is sensitive and quick as your mobile phones.  With the bluetooth mobile phone lock M818,the owner will never need to worry about where you left your keys or making copies for friends and family, the owner can program up to 10 passcodes including 1 master code, 1 standard entry code and up to 8 personalized user keycodes. 
 
Features:
1. Mobile APP Bluetooth, new intelligent master, let the lock and mobile phone open quickly through Bluetooth <1.5s
2. APP key customization: APP has two kinds of 6 kinds of custom functions, permanent, limited time customization, remote transmission
3.Open the door reminder: APP electronic key to open the door, the administrator will receive the door lock to open the door message reminder in real time
4. Key security: Electronic key has been issued, digital password can be frozen remotely at any time, invalid, and management is more convenient
5.Audio guid facilitates set up and operation
6.Electronic locking by switch from inside secures privacy
7.External power backup (USB port)
8.Suitable for residential or office use.