Zinc alloy case Silicone button internal potting makes this door lock can be used for a long time outdoors 3 ways to open the door Read card / Enter password / Read card and enter password You can set the public or private password and the password can be changed which is more secure You can use the keyboard to add and delete 2000 user data Set the door open delay Has short-circuit protectionThe upper light color indicates the working status, and the medium-sized keypad buttons are easy to press correctly Keyboard backlight allows user to find it at night Easy to install and we have UK DE FR IT ES manual in PDF The digicode is suitable for office building entrances and apartment doors IP68 and high temperature resistance make it suitable for outdoor installation Note for a complete access control system in addition to the control keyboard it is also necessary to purchase [Power] [Electric lock] and [Exit button] If you want to open the door with the card you also need to buy the ID cardIt is more recommended to use the DC12V power supply which is more stable