Feature: 1. Keyless intelligent door lock, multiple unlocking methods, fingerprint + password + physical key. 2. Touch screen fingerprint access, read the fingerprint, and then unlock the door. The door is automatically locked to protect the safety of the family. 3. With emergency USB power interface and spare key. When the power supply is severely insufficient, use the spare key. USB mobile power supply can also be used as a temporary power supply. Do not lock it. 4. The adjustable fixing screw size is between 60mm and 70mm, suitable for doors with a thickness of 35‑50mm. 5. Simple door handle setting, suitable for various situations, instead of standard single-cylinder American door lock, suitable for left and right, inside and outside. Specification: Item Type: Smart Fingerprint Lock Material: Zinc Alloy Function: Fingerprint + key + digital password Power Supply Mode: 4pcs AAA batteries(excluded) Rejection Rate: 0.01% Identification Time: ≤ 0.5s Fixing Screw Size: Approx. 60mm/ 2.4in-70mm/2.8in (adjustable)Suitable for Door Thickness: Approx. 35mm/ 1.4in-70mm/ 2.8in . Package List: 1 x Front Handle1 x Rear Handle1 x Lock Tongue1 x Gusset1 x Buckle Box2 x Key1 x Square Bar3 x 2in1 Screw1 x Reversing Screw3 x Front and Rear Panel Pair Lock Screw4 x Self Tapping Screw1 x Screwdriver2 x Screw 1 x Manual