The URX-S03D UWP-D Dual-Channel Slot-In Wireless Receiver from Sony operates in UHF-TV channels 14-25 and fits directly in the slot of Sony XDCAM and HDCAM camcorders. It can be used to capture audio when paired with the UTX-B03HR beltpack transmitter & microphone (sold separately) and features easy channel setting functions, stable RF transmission, and Digital Audio Processing technology for wireless audio and video applications.