06:19 · This ideogram is common on electrical household appliances and means on and off control. Semiotically a circuit, , which is broken, , can be symbolically re- established again by turning the vertical bar 90 degrees so it becomes horizontal.
    The signs , and are synonymous.
    On the control panel of some printers this sign means wait, not ready. In such cases means ready to print.
    Compare with , loudspeaker, radio, recorder, etc., and with , which stands for switch for connecting a record player.
    When appears lighted on a TV set it denotes that the TV is connected to a remote control.
    Sometimes and appear together to signify the on and off control.
    Another ideogram for on and off control is .