Bosch CCSD-CURD Control unit for CCS 1000 D Digital Discussion System with recorder and DAFS, Plug-and-play functionality, for quick and easy connection of up to 80 Discussion Devices, Intuitive web browser interface, control for advanced, configuration and control, Built‐in MP3 recorder with internal memory and USB recording, Built‐in Digital Acoustic Feedback, Suppression (DAFS) for ensuring superior speech intelligibility.

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.