<p>A multistage switch (10) has a switch button (11). A magnet (13) is disposed in a recess of the inner wall of the switch button (11). The multistage switch (10) has a magnetic sensor (14), which has a board (15). Two electromagnetic transducing elements (21,31) are mounted, on a surface of the board (15), at respective positions opposed to the magnet (13).</p>
