Samsung SHS-1321 Keyless Digital Touchscreen RIM Door Lock + 4 RFID tags + 4 RFID Sticky Keys + 4 RFID Cards BUNDLE  SHS-1321 plus 4 each of RFID key tags, RFID sticky keys, and card size RFID keys DETAILS  Program up to 21 user codes and RFID 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. RIM LOCK  Can Install on 160/161 cylinder prep doors with minimal modification, RIM locks can be used for niche or special doors and can be installed on the right or left hand side. 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.