In a programmable control means for switching timers or chronometers, a magnetic field sensor having a ferromagnetically alloyed wire is disposed on a program carrier. A coil is brought into the proximity of the wire. A permanent magnet adjacent thereto has a magnetic field which influences the core polarity of the wire such that the coil emits voltage pulses given polarity changes therein for the control of an electric or of an electronic switch. According to the invention the sensor wire is releasably disposed on the program carrier.
In an electromechanical time switch, an electric motor driven clock mechanism operates an electrical switch to automatically activate electrical devices at pre-selected times. The clock mechanism comprises a nominal 120 V motor. Removable jumpers are provided for permitting operation from a 120 V, 240 V, or 277 V nominal line voltage.
