Technical Parameters Power: DC 4.2V Power consumption: 5W Display: 160×160 LCD display Memory: 4M bit FLASH memory Data retention period: 50 years Maximum capacity: 30,000 (English) an 13,000 (Chinese) Communication method: RS232 / 485, support TCP/IP protocol Output format: WG26 or RS485 or RS232 LED indication: blue Communication transmission distance: 1200 metre (RS485) Card reading type: P series handhelds can read PHILIPS …