Wifi & internet remote control. Change password remotely via internet. When the user opens the door, the administrator receives a real-time prompt message. This smart app can be used for time attendance. Remotely view the status of the door, open or closed. 128-bit encryption to prevent all hacker risks. Note: Distance between gateway and lock should be within 10m. Note: To ensure compatibility with home control lock, please search TTLock and ScienerSmart in the app. If found, the lock is compatible. 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 to differ slightly from the actual product. Measurement allowed error is +/- 1-3cm.