Samsung SHS-2320 Keyless Digital RIM Door Lock + 4 RFID Tags + 4 Sticky Tags + 4 RFID Cards BUNDLE  SHS-2320 plus 4 each of RFID key tags, RFID sticky keys, and card size RFID keys DETAILS  Program up to 21 user codes and RF ID tags. Fits doors 35mm to 50mm thick. Automatic Locking. Compatible with certain NFC items. Battery operated with emergency power contact. 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 physical sensor automatically locks the door for you. CLAWED DEADBOLT  Can Install on 160/161 cylinder prep doors with minimal modification, RIM locks with a claw can be used for double doors and sliding doors and can be installed on the right or left hand side. SECURITY  Rigorously tested construction, random security code feature, multi-leveled security, intrusion alarm, PSB fire tested and fire detection sensor, Anti tampering lock out. The lock has your back.