Positive-working imageable elements have a substrate and an imageable layer that can be used to prepare lithographic printing plates. In addition, these RSC codes also can be used on the basis of the hardware installed in existing GSM mobile radio systems. Also, a control circuit 180 that cuts off current that flows in the second transmission circuit 150 when the input signal has a voltage level to be provided in the normal operation mode. A pressure sensing rod is slidably supported by the valve housing.