The EPOS | SENNHEISER UI 10 BL is Busy Light Field (BLF) for the EPOS | SENNHEISER SDW headset series. it connects directly in to the base station via the 2.5m Jack. 

The UI 10 BL visually indicates your call status, via three colours, to your colleagues helping to avoid distractions and interruptions.

Colour Fields:

• Green - Available
• Yellow - Away
• Red - Busy

• Busy Light Field (BLF) for EPOS | SENNHEISER SDW Series headsets
• 2.5mm Jack plugs directly into SDW Base
• Three LED colour status indicators
• Green - Available
• Yellow - Away
• Red - Busy