Keyless Entry Deadbolt Door Lock with Keypad-MESAIDFAMIY-Smart Electronic Code Door Lock with 2 Keys-Auto Lock-Easy Installation

This smart keypad door lock works for interior, side, or bedroom doors and offices...ect.It will help to protect your family,protect your property,protect your privacy and keep your child away from dangerous and so on....Waterproof seals protecting electronic components.Backlit Keypad for use in dark environment.Up to 10 changable codes includingpassage,user, and master levels.Adjustable backset length from 2 3/8" to 2 3/4".DIY installation(instructions included).Low voltage alarm function,Anti-peep password.Interchangeable door handle on left and right.Mechanical key open in case of the battery is dead. If you have any question with it,please feel free to contact us! We will do our best to help you.please make sure you are using a quality set of batteries. Most issues are resolved by replacing batteries. When using a premium set of batteries, you can expect at least 6 months of battery life. Do not use low quality batteries. Low quality batteries will need Replacement within weeks, if not days..