Wifi & internet remote control. Change password remotely via internet When the user opens the door, the administrator receive a real-time prompt message This smart app can be used as time attendance Remotely view the status of the door, open or closed 128-bit encryption to prevent all hacker hidden dangers Note:Distance between gateway and lock should be better within 10m. Note:To make sure you are to use and home tocontrol Lock, please search TTLock in and ScienerSmart in . If it's found in or home, then there is no problem to use. No lock included in the package. Color:White Material:ABS Package Contents: 1 * Smart Gateway 1 * Data Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.