Bosch CCSD-DL Discussion device with long microphone, Discussion Device for the CCS 1000 D Digital Discussion System, supplied with a long‑stem fixed microphone, configurable as a participant device or a chairperson device, Cardioid Microphone polar pattern, Built-in loudspeaker with volume control, Headphones socket, Request‑to‑speak indication.

Bosch CCSD-DS Discussion device with short microphone, Discussion Device for the CCS 1000 D Digital Discussion System, supplied with a short‑stem fixed microphone, configurable as a participant device or a chairperson device, Microphone polar pattern : cardioid, Headphones socket, Request‑to‑speak indication, Built‑in volume control for headphones, Built-in loudspeaker with volume control.

Bosch CCSD-DL2 Discussion Device with Long Microphone, Discussion Device for the CCS 1000 D Digital Discussion System, supplied with a long-stem fixed microphone. Enables participants to speak and listen to the proceedings, “Possible-To-Speak” indicator, “Request-To-Speak” indicator, built-in loudspeaker, microphone with mic-active LED indicators and flexible stem, headphone socket with built-in volume control.

Bosch CCSD-DS2 Discussion Device with Short Microphone, Discussion Device for the CCS 1000 D Digital Discussion System. Enables participants to speak and listen to the proceedings, “Possible-To-Speak” indicator, “Request-To-Speak” indicator, built-in loudspeaker, microphone with mic-active LED indicators and flexible stem, headphone socket with built-in volume control.