The Tek-CARE NC110-series Audible-Visual Nurse Call System provides audible and visual call indication without the use of intercom communications. The basic system consists of a master annunciator/control panel, room call stations, emergency call stations, dome lights, zone lights, control unit, and power supply equipment.

Emergency signals are identified at the master station by a rapid flashing of the associated station indicator light, call light, and emergency light; in addition to a rapid pulsating tone. Routine calls are indicated by the steady illumination of the station selector light, call light, and a slow pulsating tone. The tone may be canceled for normal calls by depressing the Tone Off button. Emergency calls take precedence over Routine calls. Call signals can be canceled at point of origin only.

Tone Off and Tone Test functions are push-button selected from the control panel. Indicator lights signal the presence of Emergency or Routine calls.