| Model | CR20E | CR20M | CR20M/W |
|---|---|---|---|
| Read Range | Up to 5cm | Up to 3cm | Up to 3cm |
| Power/Current | USB 5V DC / Max. 80mA | USB 5V DC / Max. 60mA | USB 5V DC / Max. 102mA |
| LED indicator | 2 Color LED Indicators (Red&Green) | 2 Color LED Indicators (Red&Green) | 2 Color LED Indicators (Red&Green) |
| Beeper | Yes | Yes | Yes |
| Operating Frequency | 125KHz | 13.56MHz | 13.56MHz |
| Operating temperature | -10º to +70º | -10º to +70º | 0º to +70º |
| Operating Humidity | 10% to 90% ( relative humidity non- considered) | 10% to 90% ( relative humidity non- considered) | 10% to 90% ( relative humidity non- considered) |
| Color | Black | Black | Black |
| Material | ABS+PC with texture | ABS+PC with texture | ABS+PC with texture |
| Dimension: (WxHxT) mm | 117.2x66.2x17 | 117.2x66.2x17 | 117.2x66.2x17 |
| Weight | 120g | 120g | 120g |
| Operating system support | Emulation Keypad (Compatible with WIN98/2000/XP/VISTA/7) | Emulation Keypad (Compatible with WIN98/2000/XP/VISTA/7) | Communication protocol available for development |