1. The card machine can read the card in both directions. 2. The power supply comes from the computer host and does not require an external power supply. 3. The light-emitting tube indicator and the buzzer call to identify the success and failure of card reading. 4. The HCE-700 series magnetic card query machine complies with ANSI/ISO standards. 5. Magnetic card standard: ISO 7811-78156, decoding method: F2F (FM) 7, swipe speed: 10~120cm/s8, magnetic head life: ≥600,000 times 9, power supply voltage: DC 5V±5%10, power supply current: ≤35mA11, working environment: temperature: 0℃~45℃ humidity: 10~90%RH