| 摘要 |
An electrical signalling device for a nurse call electrical communication system comprises a switch box, switch means carried by the switch box for activating a call signal at the nurse station, and a manually operable actuator member carried by the switch box for actuating the switch means. An audible signal means is connected to the switch means for producing an audible signal at the bed location in response to actuation of the switch means and immediately after activation of the call signal. An adjustable biasing means is provided for adjusting the amount of force necessary for applying the actuator member to actuate said switch means.
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