... ARM920T, strong image processing, high performance and reliabilityMiaxis SM-621 optical sensor, scratch-resistant, durable, blue background ... fingerprintsUser capacity≤3,000 personsRecord capacity130,000CommunicationRS232/485,TCP/IP(optional),USB(opional),WIEGAND(electric lock ... current≤250mAStandby current≤100mAESD>15000VPower supplyDC 12V/1AWorking temperature-10-60ºCWorking humidity20-90RH(no dew) ...