The Sennheiser EW-DX TS Wireless Base Station is compatible with all gooseneck microphones with a standard 3-pin XLR connection and no LED ring, so it can be combined with a Sennheiser EW-DX EM receiver to build a multi-functional system for conference spaces. For maximum ease of use, this model comes fitted with a single control button: simply press the button to speak and the clear LED ring will light up to indicate that the microphone is live. To complete the pack, Sennheiser has included a BA 40 rechargeable battery, so the base doesn't even need to be tethered to a power point.