KEY FEATURES: Material: The electronic lock is made of high-hardness aluminum alloy, which is anti-collision and anti-smashing. The outer shell impact test level has passed the third level. It has passed FCC SDOC certification and has a high safety factor. Installation method: suitable for 35-50 mm, door hole diameter is 38/54 mm, bolt side distance can be adjusted by yourself. Installs in minutes with just a screwdriver. ​ Keyboard: If you enter incorrectly 10 times in a row, the keypad door...