... , NAT Router Function, No Need of Background Computer Features:GPRS Wireless Router Frequency: 800, 900 and 1,800MHzReal-time ... on the construction of the GPRS networkStable data transmission with large quantity and high speedTransparent data transmissionNo need of background computer ... Maximum: 300mA at +5V DCStandby: 120mA at +5V DCRJ45 and GPRS antenna interfaceTCP, UDP, IP, ICMP, PPP, PAP and DNS ...