Check the listing for details. 860-960Mhz DC 5V UHF RFID Reader Writer Free SDK+UHF RFID Card USB RFID Reader. Condition: New. Listed at 195.00 USD. Product Description Model No. SR3308Type UHF Passive USB desktop rfid reader writerWorking frequency wide band 860-960MHZWorking mode hopping FHSS or fixedSupport protocol ISO18000-6C/EPC Gen2 ,ISO18000-6BTransmit power 0 ~ 13dBm adjustableAntenna mode Built-in small round transmitting and receiving antennaRead &Write distance read 0-180mm ,write 0-80mm tag and environment dependentWork mode Answer mode/interactive mode Software Provide SDK,DLL and Demonstration Software,sample code to facilitate further development. Data Interface USB for power supply and read, write tags' information.Read prompt LED&BuzzerPower supply single +5V DCInner size 105mmx70mmx11mmNet weight 80gOperating temperature -10 ~ +60°CStorage temperature -25 ~ +80°C