Hugolog Latchbolt Lock Electronic,Keyless Entry Door Lock, Keypad Door Lock with Handle, Easy to Install High Security Material for Metal Home & Office, Material: The electronic lock is made of high-hardness aluminum alloy, anti-collision and anti-smashing, and the shell impact test level has passed the third level. It has passed the FCC SDOC certifications and has a high safety factor.Handle anti-collision close to Class 2 zinc alloy., Installation: Suitable for door thickness of 35-50mm, door hole diameter of 38/54mm, side distance of bolt 60mm/70mm can be self-adjusted. It only requires a screwdriver to install in a few minutes., Keypad : Enter the wrong ten times in a row, The keypad latchbolt will be locked for three minutes. The button ANSI standard 156.40 stipulates 250,000 times, and the number of 250,000 times is still clearly visible., Status prompt : Battery is less than 20%,Will remind you to replace the battery.Back-lit keys can see numbers clearly at night., Waterproof : The electronic latchbolt waterproof grade is IP54, and it can be used outdoors for daily use. It is not recommended to use in severe external environments., ,