Bring new excitement and convenience to your home with this product. This door knob is recommended for interior doors and installs just as easy on both left-handed doors and right-handed doors. You will discover how useful it is to simply use a code instead of a key. Places like bedrooms, home offices and supply closets are doors you should be able to lock. Using a code is much more practical than using a key for these type of doors. In addition to adding individual users, you can also program a master code to multiple door locks, a valuable feature for property management. The keypad easily lights up with the push of a button and facilitates operation in the night time.