If we press the switcher stays make it rank raekkrasae flowing through the wires, lights and K 1 has induced electromagnetic way. The second will cause the ACK 1 change status from closed to open circuit wongchonklai.
If we press a switch to make the first current through wires attached to the lamp and K1 an electromagnetic inductance. ACK1 second to make the transition from closed circuit becoming open circuit.
If we press the life will make the first current flows through the wire and the light bulb K1's electromagnetic induction. Second, to make ACK1 change status of closed circuit become open circuits.