The product brief introduction distinguishes the lead plane working band: 910.10 MHz , 912.10 MHz , 914.10 MHz output powers: 27 dBm ~ 32 dBm communication interface: RS232 string communication , communication rate (9600 , 14400 , 19200 , 38400 , 57600 , 115200) identification distance: 0 ~ 6 M adapt to speed of a vehicle: 0 ~ 120 KM/H fetch a label: Fetch TRANSCORE , HTK , XC , SRT type railroad electron label distinguishing accurate rate: 99.9999% system compatibility: Compatible fetch the ISO－10374 international standard software platform: Provide API developing a bag , support VB , VC , delphi to develop the job temperatureDegree: - 20' C ~ + 60' C power sources: 12 V , 5 ADC current supply dimensions: 204 mms * 154 mms * 37 mms weight: 1.5 KG orbit air wire working bands: 902 ~ 928 MHz gain (dBi): 3 dB of 10 dbi level wave beam width: 120' perpendicularity 3 dB wave beam width: 40' fronts and backs compare: >25 dB polarization: Perpendicularity entering impedance: 50 OMEGA voltages standing wave ratio (VSWR): <1.35 power capacities (w): 500 connects: N-F thunder and lightning protects: Direct-current ground connection air wire covers material: High strength glass fiber reinforced plastics air wire dimension: (L X WX H) 600 X 160 X 90 mms weight: 4.5 KG work environments: The alkali , adverse circumstances such as damp , shaking adapting to wind , frost , rain , snow , salt, fog , acid apply range: The locomotive the (freight train) breaks to return to (controller) manages , the railroad wagon number distinguishes the system the Chinese railroad wagon number is distinguished in application , automation identification in managing , arranging in groups in application in railroad track scale.