Alvinlite Mechanical Code Lock, Mini Key-less Entry Password Door Lock Digital Keypad Deadbolt Code Lock for Home Office The lock is made of zinc alloy material, the surface is smooth and the surface is electroplated, which can effectively protect against serious damage and corrosion, which is very durable Sensitive password keys for easy operation, Users can set 4-7 digits non-repetitive password combination. Please be noted that the code can be used in any order Basic Parameter: Product Size: Approx. 142 x 42 x 25mm / 5.6 x 1.7 x 1.0inchs Rear Handle Product Size: Approx. 107 x 43 x 20mm / 4.2 x 1.7 x 0.8inchs Rubber Seal Size: Approx. 115 x 50mm / 4.5 x 2inchs Aperture Size of Rubber Seal: Approx. 10mm / 0.4inchs The Distance Between the Aperture of the Rubber Seal and the Center Point of the Aperture: Approx. 95mm / 3.7inchs Lock Body Size 1: Approx. 91 x 58 x 27mm / 3.6 x 2.3 x 1inchs Lock Body Size 2: Approx. 60 x 13mm / 2.4 x 0.5inchs Password Length: Approx. 2-4 Digits Applicable Door Thickness: Approx. 10-60mm / 0.4 x 2.4inchs Applicable Type: Indoor/outdoor Door Keyless Entry Door Lock, Stainless Steel Digital Pass Code Security Door Knob Deadbolt Code Lock for Home Office Enjoy the convenience and peace of mind with key-less entry and exit, and one less key to carry around, Our door lock can be used in apartment, Home, Villa, Office, Hotel, sliding door in kitchen, balcony, etc. Package List: 1 x Panel /1 x Lock Body /1 x Door Buckle /1 x Pad /1 x Shaft /3 x Fixing Screw /6 x Screw /1 x Tweezers /2 x Code Sheet /2 x Fixed Piece /1 x Password Card /1 x English Manual