Check the listing for details. Electronic Keyless Door Lock - Antique Brass (Left Hinged Doors Only) Battery. Condition: New. Listed at 34.95 USD. Simplified easy installation - No drilling required! Replaces any standard door knob.Installation requires no modification to door. Can be installed below any existing deadbolt.Bright & easy to read illuminated keypad / Manual keyed emergency bypass (2 keys included)Unlocks with 1 or 2 user programmable codes. Codes can be easily changed whenever necessary.Includes all required installation hardware. Designed for interior and covered exterior locations. *IMPORTANT: Lock fits ONLY left-hinged doors. See door diagram (in product photos) to verify your door type before ordering. Facing the door from outside the hinges should be on the left. - Fits doors up to 1-3/4" thick.- Latch adjustable from 2-3/8" or 2-3/4" back set- Dimensions: 5.1"High x 2.8"Wide x 2.6"Deep- Operates approx. one year on a set of batteries (with average usage)- Requires 4 "AAA" Alkaline batteries (not included)- One year limited warranty