The LockeyUSA 3210DC is a digital mechanical double combination push button deadbolt door or gate lock (gate boxes sold separately). The 3210DC fits doors or gates that are a 1-1/8” to 2” thick and can go up to 5” thick with an extension kit (sold separately). Included in the 3210DC are rubber trim plates that will protect the lock from the elements. From the outside, the lock is opened with an easily customizable 2 to 5-digit user code with a knob. From the inside, the lock is also opened with an easily customizable 2 to 5-digit user code with a knob. Adjustable for a 2-3/8” or 2-3/4” backset. The 3210DC is completely mechanical with zero batteries and zero electrical wiring involved. The 3210DC provides high durability, along with trusted security and LockeyUSA stands by that by offering a Lifetime Mechanical Warranty.

Mechanical, keyless deadbolt lock
One user code
Keypad on both sides (Double Combination)
Knob on exterior and interior
Changeable handing
Adjustable deadbolt backset
Covers standard 2-1/8" hole
Door Thickness: 1-1/8" to 2", up to 5" with Extension Kit (Sold Separately)
Lifetime Mechanical Warranty
Weather Resistant

https://www.youtube.com/watch?v=DkS4b5oGK0w