From the Neumann website:
The TLM 127 is a large-diaphragm studio microphone with omnidirectional and cardioid directional characteristics. In addition, via a special power supply it is possible to use remote control to switch between the five directional characteristics: omnidirectional, wide-angle cardioid, cardioid, hypercardioid and figure-8.
The key features of the microphone are:
especially low self-noise combined with an impressive dynamic range,
modern transformerless circuit technology,
exceptionally clean, transparent sound transmission.
The TLM 127 is addressed from the side. On the front of the microphone is the switch for selecting the directional characteristic. There are 3 settings: omnidirectional, cardioid, and remote control ("R").
On the back of the microphone is a 14-dB attenuation switch, as well as a high-pass filter switch with 2 settings: -3 dB cut-off frequency at 15 Hz ("LIN"), and 100 Hz.
http://www.neumann.com/infopool/mics/produkte.php?ProdID=tlm127