1、6 in 1 unlock: keyless entry smart biometric recognition lock, with password + Bluetooth + fingerprint + card + key unlock + APP temporary password unlock. 2、Administrator Bluetooth Key: After the phone and door lock are connected, open Bluetooth and mobile app, can unlock with your phone. 3、Administrator password: After the phone and door lock are connected, there is a permanent valid administrator opening password. 4、Electronic Key Remote Authorization: The administrator can remotely send the electronic key to another person's mobile phone APP, which can limit the use time of the electronic key and instantly freeze, unfreeze and delete the electronic key. 5、Password remote authorization: Can send the permanent password and time-limited password remotely, when the door lock is not connected to the net. Features: 6 in 1 unlock: keyless entry smart biometric recognition lock, with password + Bluetooth + fingerprint + card + key unlock + APP temporary password unlock. Administrator Bluetooth Key: After the phone and door lock are connected, open Bluetooth and mobile app, can unlock with your phone. Administrator password: After the phone and door lock are connected, there is a permanent valid administrator opening password.  Electronic Key Remote Authorization: The administrator can remotely send the electronic key to another person's mobile phone APP, which can limit the use time of the electronic key and instantly freeze, unfreeze and delete the electronic key. Password remote authorization: Can send the permanent password and time-limited password remotely, when the door lock is not connected to the net. Password protection: The smart lock is automatically locked for 5 minutes after entering the wrong password for 5 times. You can input any numbers before the correct password, and only the last few digits can be unlocked with the correct password. Automatic locking: After unlocking, it can be set to automatically lock after 5~120 seconds after unlocking. Normal lock: Press and hold ''#''for about 5 seconds. Low power consumption: 4 AA alkaline batteries, can be unlocked about 5000 times (about 6 months) Low voltage alarm: When the battery is low, the smart lock will sound a low battery alarm. When  use the Bluetooth key to unlocked and the network is opened, the APP will display the real-time power. When the battery fails, can use the 9V backup battery or the mechanical key to unlock. Real-time monitoring: The user unlocks with the APP or password. The administrator can check the records in the unlock record of the APP. Real-time reminder: After connecting the door lock device, click the logo in the upper right corner of the interface, to query the received Bluetooth key record and other user information. Do Not Disturb Mode: In the locked state, toggle the button to activate the privacy feature. In the unlocked state, turn on the toggle button to activate the channel mode. Specification: Material: Zinc alloy    Color: as picture shown  Communication method: Bluetooth 4.0ble  unlock method: fingerprint, Bluetooth, card, password, mechanical key, APP temporary password support System: for Android 4.3, and for iOS version 7.0 or above Unlock time: about 1.5 second  Power Supply: 4 AA alkaline batteries(Not included) Quiescent current : ≤50uA  Working current: ≤250mA  Door frame : ≥110mm Door  thickness: 38~50mm  Installation requirements:  Hold the black button on the bottom of the rear panel is adjusted in the direction L when installed on the right-the door opening Hold the black button on the bottom of the rear panel is set in the R direction when installed on the left-the port opening  Package List: 1 * Instruction  1 * Paper Positioning  1 * Front Locking Plate  1 * Back Locking Plate  1 * Installation Plate 1 * Installation Accessories Package  2 * Access Cards  2 * Mechanical Key 1 * Lock Cylinder 1 * Keyfob