Features 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. Specifications 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 Panel 2 x Rubber Pad 1 x Lock Tongue 1 x Door Buckle 1 x Stopper 4 x Screw 1 x Bolt 2 x Accessories 1 x Tweezers 3 x Long Screw 1 x Square Bar 1 x English Manual