Product Introduction EMC4404 cascadable multiswitch is made up by two group of V/H signal (which are with/without control of 22K).It is designed for 4 or less independent satellite receivers.It has four cascadable connectors .The power of the switch and LNB is supplied by the users' DVB,it also support stand-alone power supply as well. Specifications Frequency rangeInput950-2300Output950-2300ControlV. H. 22K/V. 22K/HInsertion lossInput and user3.5dBInput and cascadable4dBIsolation27dBInput/Output connector75RWorking current40mA(MAX)Transmission current1500mA(MAX)Working VoltageDC12-20VTemperature Range-40- +80°CVolume