Specification: Item Type: Fingerprint Lock Material: Zinc Alloy Bluetooth Standard: Bluetooth 4.1BLE Supported Mobile System: For Android 4.3/ iOS 7.0 or above APP: For Tuya Fingerprint Capacity :40 PCS Number of Password: 40 groups Power Supply: 800mAh rechargeable lithium battery (built-in) Emergency Power Supply: USB charging Recognition Speed: 0.5s Fingerprint Sensor: Semiconductor Service Life: >200 thousand times Lock Mode: Fingerprint/password/Bluetooth APP/key Single Tongue Lock Body Center Distance: Approx. 60mm/2.4in Applicable Door Thickness: Approx. 35 - 50mm/1.4 - 2.0in Operating Temperature: -20 - 70 How to Use: Download the APP on the mobile phone, turn on the Bluetooth, and match the smart lock. After the connection is successful, you can use the Bluetooth to unlock and check the unlocking record. Package List: 1 x Front Panel 1 x Rear Panel 1 x Lock Body 1 x Lock Box 1 x Lock Catch 1 x Instruction 2 x Install Accessory Pack 2 x Square Steel Bar 2 x Key