The industry's first line free and convenient installation, without the need for a normally open function. The mechanical knob can be opened or locked with just one click, and can be unlocked by touching twice when going out.The patented clutch structure conforms to everyone's usage habits, and the mechanical knob can intuitively determine whether it is locked or normally open through reverse locking
Triple lithium batteries can be recharged and discharged 1000 times, and old locks can be upgraded and installed directly
Cover the old lock holes with your own hands, without punching or wiring, with a wiring free structure for convenient installation, suitable for 99% of bedrooms, office doors/wooden doors with dedicated fingerprint locks,
Normally open mode allows entry and exit at any time. In normal mode, the handle is in normally open mode, so there is no need to set a separate normally open mode