Features: 6 in 1 unlock: keyless entry smart biometric lock, password + Bluetooth + fingerprint + card + key unlock + APP temporary password unlock. Administrator Bluetooth Key: After the phone and door lock are connected, open Bluetooth, mobile app, and 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. Can limit the use time of the electronic key, instantly freeze, unfreeze and delete the electronic key. Password remote authorization: When the door lock is not connected, the permanent password and time-limited password can be sent remotely. Password protection: The smart lock is automatically locked for 5 minutes after inputtng the wrong password for 5 times. Can input any number of passwords before the correct password. The last few digits can lock the door for 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: a low battery alarm for the low battery. When use the Bluetooth key and open the network, the APP client will display the real-time power. Can use the 9V battery backup or the mechanical key to unlock temporarily when the battery is out. Real-time monitoring: The user unlocks with the APP or password, and the administrator can check the records in the unlock record of the APP. Real-time reminder: After connecting the door lock device, click in the upper right corner of the interface to query the received Bluetooth key record and other user information. Do Disturbing Mode: toggle the button to activate the privacy function in the locked state. Turn on the toggle button to activate the channel mode in the unlocked state. Specifications: Communication Method: Bluetooth 4.0ble Unlocking Method: fingerprint, Bluetooth, password, mechanical key, Support System: Android 4.3 / IOS 7.0 version or higher Unlocking Time : about 1.5 seconds Power Supply : 4 section 5 alkaline batteries (not included) Quiescent Current: ≤50uA Working Current: ≤250mA Door frame: ≥110mm Door Thickness: 38-50mm Installation Requirements: Insure the black button at the bottom of the rear panel is adjusted in the L direction when installed on the right-opening door Insure the black button at the bottom of the rear panel is adjusted in the R direction when installed on the left-opening door Package List: 1 * Instruction 1 * Positioning Paper 1 * Front Lock Plate 1 * Back Lock Plate 1 * Installation Accessories Package 2 * Access Cards 1 * Lock Button 3 * Installation Plates 1、6 in 1 unlock: keyless entry smart biometric lock, password + Bluetooth + fingerprint + card + key unlock + APP temporary password unlock. 2、Administrator Bluetooth Key: After the phone and door lock are connected, open Bluetooth, mobile app, and 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. Can limit the use time of the electronic key, instantly freeze, unfreeze and delete the electronic key. 5、Password remote authorization: When the door lock is not connected, the permanent password and time-limited password can be sent remotely.