Invisible Dual System Smart Lock

【No Lock Hole Exposed】Installed indoors, and no exposed lock hole outside, so no one can get in if they neither don’t have the key nor broke the door.
【Double System】Double System and Electric Machine can help you get in when the first System gets failed. No need to worry about you can’t get in the room because of the system failure.
【Smart Battery System】10%<Batterty Power<30%, The lock will emit a sound and light alarm to remind the battery to change.Battery Power<10%, The lock unlocked itself. You won’t be lockout because of the battery.
【Intelligent Power Saving】Low power consumption, intelligent power-saving design patterns (a pair of a new battery can use around 12 months by turn on and off 10 times a day )
【Packaged】There are Lock*1, Lock catch*1, Base Plate*1, Remote controller*3, and install screws, rivets.