A selector assembly to select and deselect signal components from optical signals is disclosed. The indentations are preferably stamped or formed by some other method which does not weaken the outer wall and the heater element is retained by use of the clips in the indentations. The system ensures consistent and quality data are produced and issued to the traveler. The zone controller can also transmit an activation command to the emergency annunciators based on a received zone activation command. An evaporative fuel treatment apparatus has a filling chamber filled with the activated carbon as an adsorbent. The method for multiple touch modes comprises the following steps: receiving at least one instruction; determining whether the at least one instruction comprises a start instruction; if yes, determining whether the at least one instruction is a multi single-touch instruction; and if yes, performing a multi single-touch operation corresponding to the at least one instruction.