Shure PA421SWB PSM Antenna CombinerThe Shure PA421SWB Antenna Combiner actively combines antenna outputs from up to four PSM wireless transmitters to a single antenna, improving RF performance and reducing rack clutter.When multiple systems are required for monitoring environments, the PA421SWB combiners quietly and efficiently optimize RF management for up to four PSM transmitters when racked in a central location, while also reducing rack clutter.Features : Combines up to four PSM transmitters to a single antenna setQuieter fan for significant reductions in ambient unit noiseTemperature-sensitive fan power for significant reductions in ambient unit heat4 Input LED Signals (green when active; off when inactive)4 DC Power LED Signals (green when active; off when inactive; red when active but interrupted/shorted)Active-channel amplifier power for additional reductions in ambient unit heat
