... for best quantity, CE certification 3.Multi tag reading. 4.RS232/485 and TCP/IP Model, HCT-UHFR-10804Size, 160mmx186mmx50mmWeight, ... tagl 902~928MHz or 865-868MHZ frequency band(frequency customization optional);l FHSS or Fix Frequency transmissionl RF output power up ... with single +9 DC power supplyl Support RS232, RS485, TCP/IP. other interface is optional interfacel Built-in LED, Buzzer, GPIO and ...