| 摘要 |
A device for detecting the hooking off of a telephone handset from a telephone set body, comprises an elongated part (8) provided with hinges (11) rotating around a longitudinal axis (10); a key (6), constituted by a lateral extension of said part and positioned so as to protrude through the upper wall of the body in a raised position; a return spring (15) for urging said key in a raised position; and a push-button switch (12) fixed on said part, the button (13) of which glides on an internal surface of the base to pass from a first state to a second state when the handset is hooked off and on.
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