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. 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 Item Type: Door Lock SetMaterial: Zinc AlloyWeight: Approx. 927g / 32.7ozPassword Panel Size: Approx. 107x43x40mm / 4.2x 1.7x 1.6inRubber Sealing Ring Size: Approx. 116x50mm / 4.6x 2.0inRubber Sealing Hole Diameter: Approx. 10mm / 0.4inDistance Between Rubber Sealing Hole Diameter and Center Point Of Aperture: Approx. 95mm / 3.7inPassword Length: 2-4 DigitsApplicable Door Thickness: 30-60mm / 1.18- 2.36inApplicable Type: Indoor and outdoor doorsFeatures: Waterproof, no need for battery power, passwords do not need to be in order