Features:• RS-485 protocol• Default IC (Mifare) card• Blue backlight• Watch dog function ensure device free from halting• Beep and indicator• Surface mounted installationTechnical Specifications:System• Main Processor 8 BitRead• Read Format 13.56MHz(Mifare)/125KHz(EM, Optional)• Read Range 6-8cm (max.)• Response time <0.1sFunction• Tamper Alarm YesInterface• To Controller RS485 WiegandGenreal• LCD Display Blue backlight• Beep Tone Buzzer• Ingress protection IP55• Power Supply 9-15VDC/100mA• Working Environment -30?-+60?• Working Humidity =95%• Dimension(W× D× H) 135mm*86mm*12mm• Weight 0.25Kg