The R220 from Impinj is a RFID Reader with Frequency UHF 860 to 960 MHz, region dependent, Operating Temperature -20 to 50 Degree C, Power 10.0 to 30.0 dBm, 10.0 to 32.5 dBm, Rx Sensitivity -82 dBm, Supply Voltage 24 VDC @ 800 mA. Tags: Fixed Reader, POE Reader. More details for R220 can be seen below.