Today I used the magnet sensor to turn on and of the buzzer. When I turn the switch on the buzzer automatically turns on but when I place the south side of the magnet near the left side of the magnet sensor, or the north side of the magnet near the right side of the magnet sensor the buzzer turns of. But if I place the north side of the magnet near the left side of the magnet sensor, or the south side of the magnet near the right side of the magnet sensor the buzzer turns of. Here is a picture of me turning of the buzzer by placing the the south side of the magnet near the left side of the magnet sensor.