The project shows the design of dual programmable keypad code lock that is based on a PIC16F452 microcontroller. The keypad has a cable length of up to 100m and up to two keypads can be connected to ...

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Doug Mahoney Doug Mahoney is a writer covering home-improvement topics, ...

Smart locks have certainly elevated the way we enter our homes. But while smart locks and other smart home devices can make your home more secure and offer some level of convenience, they're not ...

Compared with standard locks, keyless locks are more convenient and secure. There are no physical keys to lose or would be thieves to copy. Nor is there an open keyway to pick from the outside. These ...