Samsung SHS-H505 Digital Door Lock, Black, Touchscreen with Small Mortise(AML-220) DETAILS  Program up to 31 user codes and RF ID tags. Fits doors 40mm to 80mm thick. Automatic locking. Compatible with certain NFC items. Handle levers are adjustable to left or right side. Battery operated with emergency power contact. DESIGN  Samsung door locks have a sleek modern design which would complement any interior or exterior door in the residential home, apartment, or commercial business office building. EASY TO USE  Use the digital touchscreen numeric keypad to enter a password or RFID faster than you can turn a key. Shut the door and the magnetic sensor automatically locks the door for you. MORTISE  Sturdier and more durable than cylindrical deadbolt locks but do require door modification. The mortise is electronic for faster open/close and has the added security of a latch. SECURITY  Rigorously tested construction, random security code feature, bump and pick proof, intrusion alarm, PSB fire tested and fire detection sensor, anti tampering lock out. The lock has your back.