1, GPS location 2, Data sent by GSM/3G 3, Auto collecting and upload data 4, Omni ... -directional or oriented 5, Welcome OEM Our Product,RFID/GPS ReaderDetails ... GPS function, which can know position well2, Data send to serve by GSM/3G network.3, Collecting and ... antennas5, Maximum identification range is 100 meters and can be adjusted by attenuator6, Simultaneously ...