The Azden 1201SiT wireless microphone system combines the 1201URX/Si slot-in receiver with the 1201BT body-pack transmitter and EX-503H lavalier microphone. (Specify Panasonic or Sony type slot-in.) 

Azden's 1201 Series wireless microphone systems are designed for professional applications. They offer 188 user selectable, DTV compliant frequencies and true-diversity technology with two complete front-ends and high-gain antennas to maximize reception and range while greatly reducing interference and drop-out. Both transmitter and receiver feature multi-function digital displays and rugged construction. The receiver uses 12VDC camera power, and the transmitter is powered via 2-AA alkaline batteries for up to 8-hours. 

The Azden 1201 Series is a viable choice for broadcast, ENG, EFP, video & film shoots.