This door lock keypad is awesome. No more fussing with a key just enter the code and your door unlocks like a dream. The operation is smooth and it fairly easy to install. Just add batteries and follow the programming instructions to change the default factory code and enter your own. The keypad lights up so you can see after dark and two mechanical keys are included in case the batteries go dead you won't be locked out. It has auto lock function that you can adjust the time you like the auto lock to engage. On your way out just press the lock button to lock instantly if you prefer. If the incorrect code is entered three times then there is a 90 second wait time before you can try again. And there is an audible tone beep that you can enable if you like. The outside keypad housing is aluminum for sturdiness and to be rustproof. The inside housing is plastic but appears sturdy as well for lasting endurance. The bolt and strike plate is included with the screws needed for installation. The only tool you should need is a phillips head screwdriver. Just follow the installation instructions. It also automatically selects the direction of closing the bolt for left or right side opening doors so no hastles figuring that out. This is really a great lock package and I am very happy with it and I am certain you would be also. It's affordable cost mail this an exceptional value on most budgets. So if you are tires of fumbling with all those keys searching for the correct key than this is for you.