FIELD: physics.
SUBSTANCE: collapsible wireless couplers (100, 700) contain first parts (102, 1002) pivotally connected to second parts (104, 1004). The first parts (102, 1002) can move from first positions, in which the first parts (102, 1002) lay on the second parts (104, 1004) to the second positions, in which the first parts (102, 1002) are stretched vertically upwards from the second parts (104, 1004). The first parts (102, 1002) contain one or more buttons (302, 304, 306, 308, 1010, 1012), for example, pair of directed action buttons, such as control buttons (302, 304, 1010, 1012) UP and DOWN. Hardware and/or software are used to change function of buttons (302, 304, 306, 308, 1010, 1012) depending on position of the first parts (102, 1002).
EFFECT: reduced size and improved functionality.
2 cl, 11 dwg
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