Roger Multimedia Hub is a 2.4 GHz wireless multimedia transmitter designed for classroom and studio use. It connects to multimedia devices via a 3.5 mm jack, provides audio mixing for foldback and programme audio, and supports Roger receivers and microphones (unlimited receivers in a network; up to 35 microphones). The unit runs on a rechargeable Li‑poly battery, ~10 hours, with 100 mW RF output and a compact 104 × 55 × 16 mm chassis (120 g).