Operating voltage: 5V (typical)ESD: 4kVFrequency: 13.56MHz (HF: high frequency)Compliant with ISO 14443A protocol:Supports Mifare 1k S50, 1k S70, ultra-light and ultra-light CSupports Mifare Desfire and ProSupports FM11RF08, BL75R06 and ISSI4439Supports reading and writing Supports secondary developmentPhysical interface:USB 2.0 with USB cable 1.8m long, shielded and magneticRS 232 with cable 1.5m longTTLRFID antenna: integration design of reader and antennaOperating system: Windows 2000/XP/Vista/WIN 7/WIN CE and LinuxRead/write distance (depending on antenna structure and user environment):14443A: 0 to 10cmWith 3 colored LEDBuilt-in buzzerDevelopment environment: C++, VC, Java, C #, Vb, Vb.Net and DelphiApplications:Software rechargeConsumerE-ticketCardSize: 110 x 80 x 26mmWeight: about 100g