Fangrui Product Details This High-quality Keyless Electronic Cabinet Lock Features Touch Button Technology And Can Batteries With Convenience And Speed. Offering Up To Tens Of Millions Of Key Combinations, Its For Use In Cabinets And Tool Boxes. Keep Your Items Safe With This Easy-to-use Combination Safety Lock. Product Name: Keyless Cabinet Lock A: 20mm-applicable Aperture 19mm, Suitable For Cabinet Thickness Less Than 15mm Treatments: Matte Chrome Plating Ultra-long Battery Life: Can Be Used For 7-10 Months, Can Be Unlocked More Than 3000 Times 1. Unlock/lock Unlock: Enter The Factory User Password, 1234+ok Or Enter The Factory Management Password 4321+ok The Buzzer Beep. A Long Sound. The Light Is On; Rotate Within 3 Seconds. Lock: Turn Back, Lock. 2. User Settings Change Password (e.g.: Change The Factory Password To 123123) Nter The Factory User Password 1234+ok Or The Factory Management Password 4321+ok The Buzzer Beeps For A Long Time And The Light Stays On; And Hold The Ok Button For More