This is a Digital Electronic Combination Lock that consist of 10 digits as the pass word. You have to press those 10 keys according to the given order to switch on the relay. Re set time between two keys is about 3 seconds. So you have to press those keys correctly with soon. Otherwise circuit will automatically reset and start from beginning. If you want reset manually you can press s1 switch.
This is Electric Shock Circuit and this can be use as to make a Electric Fence.Circuit is a simple inverter circuit and it will convert DC 6V in to AC 230V. So you have to be very careful when you are testing the circuit. Never touch the circuit after connecting it to the battery.
