R220 is 2 port UHF RFID reader, which embeds the Impinj module. Its communication interface can be USb, Rs232,Rs485 and 100 M Ethernet etc. It has 4 TNC antenna interfaces with a protection level of IP64. It is suitable for RFID intensive and more challenging environment required a higher reading writing performance, such as warehousing, logistics, production management, etc. It has a tag identification rate of 400 tags per second and using 2 antenas we can focus the reading range to 2 diffent angles.