
There are six (or more) push switches. To ‘unlock’ you must press all the correct ones at the same time, but not press any of the cancel switches. Pressing just one cancel switch will prevent the circuit unlocking. When the circuit unlocks it actually just turns on an LED for about one second, but it is intended to be adapted to turn on a relay which could be used to switch on another circuit. Build your own.





































March 24th, 2009
Hi.. Very Good innovative project.. Great work..
February 14th, 2010
Very Good innovative project. Great work.