After researching and testing multiple key lock boxes, we have identified the ones that offer the best combination of security, durability, and ease of use. From small portable lockboxes to larger ...

Set your own four-digit combination lock box; reset the combination for thousands of personalized combination code options For outdoor use; heavy duty key safe is constructed with a solid zinc ...

Laser cut plywood boxes with combination locks are even cooler, especially when the combination is entered on four separate number selectors, on four sides of the very same box. That’s exactly ...

Here’s a really fascinating circuit that implements a combination lock using relays and logic gates. Even with the schematic and written explanation of how it works we’re still left somewhat ...

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We may receive a commission on purchases made from links. Having a place to hide spare keys is important for many people.