Shure PA421A Antenna Combiner for PSM Systems

The PA421A from Shure combines up to four PSM transmitters to a single antenna set for improved RF networking and reduced rack clutter. It features a quieter fan for significant reductions in ambient unit noise (especially useful for installation work). The PA421A is also has temperature-sensitive fan power for significant reductions in ambient unit heat. On the front panel you will see 4 input LED signals (green when active; off when inactive).