Feature:1. Password door lock, waterproof, suitable for indoor or outdoor doors with a thickness of 38‑48mm, aluminum alloy doors.2. Fully mechanical password keypads, unique door tongue, plug‑in card, anti‑theft, high security.3. When the password is entered incorrectly, press the C key, and re‑enter the password except for the C key.4. It can be installed on the left‑opening door or right‑opening door for easy installation.5. Perfectly suitable for apartments, schools, hotels, dormitories, office buildings, etc.Spec:Item Type: Door LockMaterial: Zinc alloyWeight: Approx. 840g / 29.6ozFront Panel Size: Approx. 140x60x30mm / 5.5x2.4x1.2inBack Panel Size: Approx. 160x70x50mm / 6.3x2.8x2.0inLock Tongue Size: Approx. 55x25x80mm / 2.2x1.0x3.1inBattery Parameters: 4 x AA Batteries (Battery Not Included)Initial Password: 123456User Capacity: 20 GroupsApplicable Door Thickness: 38-48mm/1.5-1.89inApplicable Environment: Waterproof, high temperature resistanceScope of Application: Apartments, schools, hotels, dormitories, office buildingsHow to Use: Drill out the installation hole according to the hole drawing, use the accessories, complete the installation, and set the password.Package List:1 x Front Panel1 x Back Panel1 x Lock Tongue2 x Key1 x Fixed Plate1 x Door Holder1 x Baffle Plate4 x Wood Screw2 x Screw4 x Fixed Screw1 x Accessory1 x English ManualNotice:1. Please allow 0‑1 inch error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.