I’m looking for an electronic lock w/ keypad. I’m looking for something to open/close and electronic circuit (like to turn on/off a light bulb). I’ve searched all over the internet, only finding electronic DOOR locks (I don’t want to use these). I was hoping to find one that has 12 keys (0-9, #, Ӿ), an LED/LCD display (to show keys hit, open/close, or anything else), and 3 LED’s (they would be to indicate ELECTRICITY FLOWING, CORRECT, INCORRECT). Anyone know where I could find something like this? Thanks!

I am building an electronic lock from instructions that I have found online. I have found a pretty easy-to-follow circuit diagram, but there is one part that its confusing to me. In this circuit diagram, http://www.free-electronic-circuits.com/circuits/electronic-combination-lock.html, all the way at the right/top, there is a section that looks like a coil and has the text "K1 6v" next to it. Can anyone shed some light onto what that means? It would be greatly appreciated.