Does not lock automatically (This can be a pro or con depending on your needs) Slight adjustment to door knob cutout may be needed to accommodate the width of the lock (Borehole can not less than 1-15/16). The Premier Lock KD02 deadbolt can be locked both inside and outside: From Inside: Turn the thumb turn to lock/unlock manually. From Outside: Enter your preset code on the push-button keypad to lock or unlock the door - Lock type: Deadbolt - Whether with key? yes - Whether with battery ? No battery required - Adapter door thickness: 1-3/8 (to) 2 - Center distance: 1-3/16 (to) 2-1/8 - Lock margin: 2-3/8 (to) 2-3/4 - Open the door: inside and outside - Easy to install - No need wiring - No need power installation - Easy to set up combination DOES NOT LOCK AUTOMATICALLY (THIS IS A PRO OR A CON DEPENDING ON YOUR NEEDS) Can use pass code or key to lock it. Specification: - Brands: Elemake - Materials: High Grade Stainless Steel 304 - Product Size: 5-5/8 x 3-3/8 - Colour: Silver - Applicable: residential homes, apartment buildings, offices, schools, hospitals, and other applications where the need to restrict access to an area. What Is a Keyless Door Lock, and Is It a Secure Option for the Home? - Bob Vila 100% mechanical stainless steel 304, deadbolt is extra hard, lock easily by turning the knob left or using key to lock it, open passcode or key The thief very difficultly pries open it. This lock is very difficult to pry open. For a double bore standard door, this lock must be installed on the above bore. Mechanical Keyless Door Lock Keyless Deadbolt Mechanical Stainless Digital Code Keypad Door Locks Size 5-1/2 x 3-1/4, Maximum borehole diameter 2-1/8
