Feature: 1. [Completely Mechanical] Mechanical coded lock, no battery or wired power supply is required at all, and the door can be opened quickly by entering a 2‑4 digit codes. 2. [Zinc Alloy Material] This combination lock is made of high quality zinc alloy material, which is durable, energy saving, safe and environmentally friendly. 3. [Keyless Entry] No key is required, avoiding forgetting to bring the key or losing the key and being unable to open the door, which is safe and reliable. 4. [Scope Of Application] Easy to install and use, you can set your own password, widely used in gates, parking lots, offices, interior doors, rental houses, etc. 5. [Suitable For Outdoor] Intelligent coded lock kit, waterproof and fireproof, high safety, corrosion resistance, suitable for doors with a thickness of 30‑60mm. Specification: Item Type: Door Lock Set Material: Zinc Alloy Weight: Approx. 927g / 32.7oz Password Panel Size: Approx. 107x43x40mm / 4.2x1.7x1.6in Rubber Sealing Ring Size: Approx. 116x50mm / 4.6x2.0in Rubber Sealing Hole Diameter: Approx. 10mm / 0.4in Distance Between Rubber Sealing Hole Diameter and Center Point Of Aperture: Approx. 95mm / 3.7in Password Length: 2-4 Digits Applicable Door Thickness: 30-60mm / 1.18-2.36in Applicable Type: Indoor and outdoor doors Features: Waterproof, no need for battery power, passwords do not need to be in order. Package List: 2 x Door Lock Panel2 x Rubber Pad1 x Lock Tongue1 x Door Buckle1 x Stopper4 x Screw1 x Bolt2 x Accessories1 x Tweezers3 x Long Screw1 x Square Bar1 x English Manual Note: 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.