The Sennheiser AVX Camera-Mountable Combo Wireless Set is designed for plug and record operation with fully self-configuring operation consists of their EKP receiver, SK bodypack transmitter, an ME2 lavalier
microphone, and an AVX-42 handheld transmitter with an MD42
omnidirectional capsule. The system provides a variety of automatic
functionality aimed at flexibility and speed.
The EKP receiver has a compact design that plugs directly into the XLR
input on your camera or recording device and includes the necessary
adapters for use with DSLR cameras. It powers on and off automatically
when it senses 48V from your recording destination, for fast recording
and saving battery life when not in use. The receiver also detects your
recording input's sensitivity level and adjusts automatically, reducing
distortion and eliminating the need to adjust your mic's level.
It should be noted, that while this system includes 2 transmitters, only 1 can be used at a time.