RFID reader terminal JT-900 is the UHF RFID Passive Handheld Reader of reading and writing, which is based on the Andriod 4.1 operating system of standard configuration. The Handheld Reader have different module, such as barcode scan module, R2000 module, QM100 module, R500 module and so on. According to choose different module, the reading range of 0~3m could be choose.