HAIFUAN Right Hand Electronic Keyless Code Door Lock,Unlock With Code,Mifare Card, And Mechanical Key HFAS200MF-R, Keyless Entry Providing Enhanced Security. 3 Unlock Options: Code, Mifare Cards, And Mechanical key,Package Includes 2 keys And 2 Mifare Cards Handle Orientation Default for Right Hand(Not Reversible). Make Sure it Fits Your Door Before Order. Keypad Illuminates When Touched,Standard Adjustable Single Latch for 2-3/8" and 2-3/4" 200 Independent User Codes(4-8 digits)& The Ability To Quickly Add Or Delete Each User Individually Easy Installation, Driven by 4pcs AA Battery (not included).9V Backup Power Terminal At The Bottom Of Plate In Case Of Dead Battery Diameter of plate: 2.72&#034;(69mm)*6.1&#034;(155mm) Latches with backset of 2 3/8&#034;(60mm) or 2 3/4&#034;(70mm) adjustable Handle length:5.31&#034;(135mm) For Apartment For Office For Bedroom