2 Ways to Open It: The safe box can be opened in two ways, one way is override keys + turning knob, The other is personal code/master code + turning knob. If you forget your code or if the batteries run out, 2 keys are available for emergency opening. Strong & Secure: The safe box is made of reinforced solid steel wall construction. Dual security steel door locking bolts & a corrosion & stain resistant powder coat finish keeps the drop box safe. Easy To Install: The pre-drilled holes inside the safe included 125px bolts for anchoring, you can mounting it permanently fixed to the floor, wall or cabinet. Double Protection: For security reasons, three incorrect entries activate the alarm system and beep for seconds. Digital safe is easy to storage or hide anywhere. Size: 31 × 20 × 20 cm. Perfect For Storage: Ideal for private use or in the office to stow and secure valuables. The inside of the safe is lined with carpeting, which forms an additional protective layer and protects jewelry, heirlooms and other sensitive items from scratches and damage.