Patented PIN Genie technology makes it nearly impossible to guess your personal access code (even if someone is watching) when entering your PIN number by always shuffling number locations on the secure, backlit keypad. Great for keeping track of family members as they arrive home. Universal fit / easy, one person DIY installation. Fits right or left swing doors 1 3/8" to 2" thick.Installs in about 15 minutes using common household tools. Any product you return must be in the same condition you received it and in the original packaging. We usually respond within 24 hours on weekdays. Thank you for shopping at our store. This item is in the category "Home & Garden\Home Improvement\Building & Hardware\Doors & Door Hardware\Door Locks & Lock Mechanisms". The seller is "nabe_4983" and is located in this country: US. This item can be shipped worldwide.