OMNITRONIC UHF-502 bodypack transmitter for the license-free 823–832 MHz Duplex Gap, supplied with a 1 m electret lavalier microphone. The transmitter provides infrared synchronization, adjustable sensitivity, an LCD display with charge-status and channel information, belt clip, and selectable RF output of 5 mW or 10 mW. It uses two AA batteries, offers a line-of-sight range of up to 50 m, and connects to the microphone through a 3-pin mini XLR input. The cardioid microphone has a 50–15,000 Hz frequency range.