... reach 30,000 after extension; 6. Have multiple interfaces, including Ethernet, USB, RS-232 serial port, cash drawer and etc. ... to complicated environments;10. Stand-by time can be over 32 hours.11. Raw ABS material cell, white body ... :RJ-11, RJ-45, USBWireless CommunicationsZigBee,GPRS,CDMA,WifiRandom AccessoriesHost, a product description of a product warranty card, product certification a power cord ...