Lockly Smart Lock - Great Home Gadget for Just $199! 

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KEYLESS ENTRY AND CONVENIENCE: Lock and unlock your door with one finger tap on your smartphones via Bluetooth or by entering a 6-8 digit access code on the touchscreen keypad. This door lock also comes with 2 backup physical keys in case you ever need. Secured keyless access convenience for your offices, home or rental properties.
HIGHLY-SECURE SMART LOCK: The world's first Patented peek-proof smart door lock, the next step in automation. The unique algorithm reshuffles the number combination after each use and prevents others from copying your smart code, keeping your home safe. Touchscreen keypad will be disabled after 3 wrong attempts and can only be activated by entering the right code twice. Auto-lock, and one-touch locking system provide enhanced security when you are at home or out.
FAMILY SHARING WITH EKEYS: Each family member could get their own smart code for keyless entry. PIN Genie is designed to make home security a top priority and to give you peace of mind. Track as soon as your kids or family members are home. Grant access to guests and others by sharing e-Keys with unique schedules using the FREE PIN Genie Smart Lock app.
CONTROL ACCESS AND MONITORING: Works on both iOS and Android devices. This security lock will track unlock history by each user 24/7 and stores in the app for your review. Push notifications will be sent to you once your friends/guests check-in. Now, you’ll know exactly who and when people are entering your business or properties. While using the virtual keys, there is no need for you to asking back the physical keys from guests or renters.
EMERGENCY POWER SUPPLY AND DIY INSTALLATION: You can open your front door with a 9V battery on the instant battery charging terminal if you forget to replace the dead batteries. Note: The latch has adjustable backset 2 3⁄8” or 2 3⁄4” to fit most standard doors. (Please check your door measurements prior to purchase this smart deadbolt). You can find the installation manual, user manual and specification sheet under Technical Specification section for additional information.