NCB-03(NCB-028) is the pear push nurse call switch attached to the patient’s intercom panel (BCP-18) via a coiled cord secured by an 8-pin military socket preventing detachment from the panel by any jolt.
NCB-03 (NCB-028) also has a microphone for a 2-way communication to the staff console (CUI-04) in combination with the speaker in the patient’s panel (BCP-18).
NCB-03 has a switch to turn on/off the reading light in the Patient’s console.

.