... active reader RFID readerMR3001A is a type of omni-directional reader, applying in wide alleyway, far distance, ... 360 degree roundness, can be connect with directional external antenna for directional identificationIdentified distanceMaximum 80m,distance adjustableRecognized speed80km/h ... (work with 2dBi omni antenna)160kg/h (work with 12dBi directional antenna)Anti- conflictionidentify >50 pcs tags ...