Abstract: Mobile apparatus for attachment to a hospital bed, gurney, wheelchair, or similar transport device, has an attendant call button operable by the patient in case of an emergency, thereby activating a signal to summon an attendant. In a preferred embodiment, the signal includes both a visual indicator and an audible indicator, wherein the visual indicator is a light positioned at the distal end of a stanchion mounted to a housing, and the audible indicator is a beeper disposed within the housing. The call button is attached to the distal end of a retractable power cord and has a clip associated therewith for securing the button to the patient's clothing, bed covering, or other location convenient for the patient. Electronic circuitry contained within the housing and powered by a rechargeable battery is employed to sequentially control the operation of the light and beeper. The housing is easily detachable from the transport apparatus to facilitate recharging of the battery.