GAORFID 4 port UHF RFID reader with GPS and 4G fixed intelligent reader fully supports EPC C1G2, ISO18000-6B/C, GB/T29768-2013 (optional) and other mainstream UHF RFID air interface protocol, working frequency band supports national standard dual Frequency 920 MHz to 925 MHz, 840 MHz to 845 MHz and FCC, 902 MHz to 928 MHz and ETSI, 865 MHz to 868 MHz, output power 0 dBm 33 dBm optional, with long identification distance, fast speed, strong multi-tag identification ability, strong anti-interference ability and protective performance High performance and easy installation and use.