You will need the current working combination and the door off the lock box in order to change the code. This prepares the lock box to receive a fresh combination of numbers to unlock the box. For greater security, please change the combination … Enter the code. key lock box because she said they were going to a different brand and it would be good place to keep a spare key. Then, check what number you're at, add 5 to that number, and write it down. Well I can't recall the combination, and I can't recall where I wrote it down. Lock boxes are compartments in which house keys can be securely contained and selectively accessed while a home is vacant. Then, write down whatever number you're at. There not really that big of a deal if you know a few key things about them. This is a metal box, usually fixed to the wall by the front door, with 10 buttons on the front which you press to enter the secret combination. Until the last few years, almost all lock box locking mechanisms were opened through a combination of letters or numbers, although lock boxes that open electronically, known as Supra lock boxes, are now common. i have a spare key, so i am able to enter my house still, but it is annoying to not be able to use the key in the lock box. Next, set the dial to that number and turn it counterclockwise until you hear it click again. The Supra lock box works with four-digit codes. Though there are several varieties of key boxes, with several different types of locking mechanisms, combination key boxes are one of the more common types. Then, write down whatever number you're at. $29.19 $ 29. The lid will lock into place, and the combination will clear when the OPEN button is released. Do I just need to buy a new one or is there a way to open it and reset it. Many people use the key lock boxes manufactured by the Supra lock box company. If you know the code, enter the four digits by pressing down on … Ge Security/Supra Keysafe Slim Lock Box 1004 Key Cabinet, Assorted Colors. A fellow locky said,"Bet ya can't open this!" Limited Warranty Supra Products, 4001 Fairview Industrial Drive SE, Salem, Oregon 97302 (Tel. I have a supra push button lock box. Then, check what number you're at, add 5 to that number, and write it down. Generally a supra combination lock operates with a four-digit password. I've got a supra push button realtor key box and I'm kind of stumped on how to get it open. You can mount Supra safes outside your property to keep your spare set of keys safe or hide the safe somewhere inside your home.