... 20m 4.RS232, RS485, Wiegand ,RJ45 RFID Reader RFID Reader Character1.Passive RFID UHF Reader 2.UHF Reader with built-in antenna, 15~30meters long ... for club ,library,Time attendance,Dinner management,Pool managementRFID Reader Specification Working frequencyISO 902MHz ~ 928MHz, (customized as per ... wattsDimension450mm*450mm*65mmWeight5.0KgWorking temperature-30c~+70cRFID Reader pictures RFID Reader