The TEEHO Keypad Deadbolt comes with the auto-lock function. If this function is turned on, the lock automatically locks your door after 30 seconds (default duration). You can also set your preferred duration – 10-99 seconds. The auto-lock feature is turned off by default. So, you'll need to turn it on yourself to get it to work. In this video, you'll learn how to turn on/off the auto lock function, and how to set your preferred auto lock time delay (duration). You can also read the full programming guide: TEEHO TE001 – https://smarttechville.com/teeho-door... TEEHO TE002 – https://smarttechville.com/teeho-fing...