Samsung SHS-H635 FMS Digital Door Lock, RFID Keyless with Mortise (Small AML-220) DETAILS  Program 1 master pin and up to 20 RFID tags. Fits doors 40mm to 80mm thick. Automatic locking. Compatible with certain NFC items. Handle levers can flip to either the 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 pin or RFID faster than you can turn a key. Shut the door and the mortise sensor auto 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.