2 Installation Methods: It comes with a removable lock shackle so you can hang the portable lock box on a door knob or someplace. Or you can securely mount it on the wall of your home or office with the provided screws and expansion plugs. Sturdy Security Lockbox: Puroma Key storage lock box is made of high-quality aluminum alloy and steel to keep your keys safe. Rustproof, cut-resistant and effective resistance to violent damage caused by hammering, sawing, or prying open. Easy to Use: The lock box code is pre-set with 0-0-0-0, you can reset your new custom 4-digit code in 4 simple steps. The numbers of dials are easy to move, providing you with 10,000 possible combinations. Safe and convenient. Large Capacity: The key lock box has a large internal storage space for safely storing your house keys. You can put your keys in the lockbox for emergency entry when you go out for business or a trip. Never worry about losing your keys. Wide Application: This key lockbox is rust-proof, corrosion-resistant, and weatherproof, suitable for home, office, garage, apartment entrance, and rental house’s key storage. Perfect for Airbnb realtors, cleaners, pet sitters, etc. l Specification: Brand: Puroma Material: Aluminum Alloy Lock Body, Carbon Steel Lock Shackle Installation Type: Wall Mounted & Hanging Application Scenarios: Apartment entrances, garages, rental houses, holiday houses, etc. Instructions: How to set up your new combination Step 1: Set the default code 0-0-0-0 to open the key box Step 2: Push the RESET button from A to B Step 3: Set the new combination you want Step 4: Push the RESET button from B to A How to Mount On The Wall Step 1 Mark the position of 4 holes with a pencil. Step 2 Drill holes by using an impact drill. Step 3 Nail into expanded plugs. Step 4 Tighten the screws with a Phillips screwdriver. How to Hang On The Doorknob Step 1 Open the box, and push the inner button up. Step 2 Pull the button up to plug out the shackle. Step 3 Hang it to the doorknob. Package Contains: 2 x Key Lockbox 8 x Screw 8 x Expansion Plug 4 x Black Rubber Stoppers 2 x Manual