Built in RFID Card Reader: 125Khz-ID or 13.56Mhz Mifare-IC Support three kinds of opening door mode: Card or Pin... One Relay output User Capacity: 1000 Card+1000pin. Reading Distance: 3~10cm. Working Voltage: +12VDC+(-)10%. Working Current: Less than 100mA Operating Temperature: -10° C— 70° C. Operating Humidity: 20%— 80%. Size: 120mm× 78mm× 22mm. Weight: 230g.