Voltage for operation: DC 12V+/-10% Functioning current: less than 100mA Measurements: 120x78x22 mm 110g in weight Temperature range: 0°C to 60°C 20% to 80% relative humidity 1000 users for storage EM (ID) card (IC card for options) is the alternative card type. Distance to read a card: 1 to 15 cm