The present invention discloses a timer switch that uses an integrated circuit to control the time and a self-locking electromagnetic coil solenoid valve to drive the operation of a microswitch, which is particularly applicable to be installed on a wall as a timer switch. Therefore, it is possible to obtain a high rectification ratio, to make a driving voltage low, and to make a luminescent efficiency high. Rated events can be stored in a database system with these rated events being utilized to, among other things, restore information that is stored locally on the rating system. One support jaw supports the workpiece in a laterally sliding manner in a region from its tangential entrance into the forming groove, up to a point at a predetermined distance in front of the same while the other support jaw assumes a retracted initial position. Each of the power multiplexers has a plurality of inputs.