Video Intercom Calling Remote Unlock – Wi-Fi Enabled door lock with Wi-Fi VDP for remote unlocking using app from anywhere in the world. When someone presses the bell button on lock you will get video call on mobile with Unlock Button, you can see communicate and unlock. Bell button press on lock required to get video call on mobile. 8-in-1 UNLOCK METHODS: 3D Face Recognition Unlock, Fingerprint Unlock, Mobile App Unlock, Password Unlock, RFID Card Unlock, Virtual Password Unlock, OTP Password Unlock, Mechanical Key Unlock. Special Features: 3DFace ID + Camera + WIFI + Mobile App + Fingerprint + Password + Card + Mechanical Key + Doorbell SMART FINGERPRINT TO UNLOCK - No need to enter password to unlock, bring you more convenient life, Advanced biometric fingerprint technology, the lock can recognize 100 fingerprint and the recognition speed is 0.3 Display - 4 inch LCD display to live view visitor with SD card required separately for recording visitor video. Audio not available. Long lasting battery - 4200 mAh rechargeable battery for long life, runs upto 2 months depends on usage. Fits standard-sized doors of 30 to 100mm thickness 3D FACE RECOGNITION TECHNOLOGY - you only need to collect your face in the settings and the lock safely captures a copy of your features, even with glasses can be accurately identified. Fully automatic 3D face recognition, infrared fast scan unlock. Infrared scanning for fast and accurate identification. Refuse all fake, photos, videos, 3D models. Mobile App UNLOCK - No need to pair with gateway, Wi-Fi smart door lock supports remote unlock with mobile APP when someone makes an unlock request with # in the keypad. No distance limitation.