The PCB board (3) has a control key (4), and the circuits of the control key (4) are electrically connected with the chip components.
A screen may be activated by pressing a control key plus a corresponding numerical key such as the number 1 for the first field (1).
It is not necessary to press the control key (3) all the time while the toilet cover plate is disassembled, and only one press to control key (3) is need.
A display-integrated control key may control the presentation of data.
The control key (3) is fixed on a fixation frame (7).
The user may switch from one screen to another by pressing the control command plus the corresponding numerical key.
In order to simplify operation of the button (13), the casing (1) is preferably fitted with a rotatable ring (15) which has a control surface (16) associated with the button (13).
The invention relates to a switch comprising an operating rocker button (1) and at least one contact element (15) which can be actuated by a radial deflection of the operating rocker button (1).
Said contact element can be actuated directly by the operating rocker button (1), or by the operating rocker button (1) by means of a transmission element (2).
At least one camera function control button (401-d) is mounted to said camera housing (12) and electrically connected to said camera signal unit (30) to control internal or external functions.
When the user holds the cellular phone with the side of a second switch key (9) in front of the user, the user is to press the second switch key (9).
When the user holds a cellular phone with the side of a first switch key (8) in front of the user, the user is to press the first switch key (8).
An apparatus receives key mode and input data generated by a user's operation of its keys.