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2.4G active access control reader card for school person manageModelParameter245A Working Frequency2.4GHz――2.5GHz ISMOperating modeRead only RF Power-18dBm-0dBmReading distance0~50m (with standard matched 2dBi Omni directional antenna)0-200m(depends on antenna)Operating CurrentModulationGFSKCommunication rate250Kbpsã€1Mbpsã€2MbpsWorking temperature-20℃~60℃ 90%RHLife timeRead and write: 2 years(500ms transmitting interval)Read only: 4-5 years (500ms transmitting interval)Electric hintAlarm when low batteryMaterialABS(RoHS), flame retardantColorWhite, blue, yellow, greenProtection GradeIP65Drop testing1.2mWeight30gDimension87mm*56mm*5mm