... operating system in high performance ARM 9 ProcessorBasic FeaturesLEDs for Power, Ready, Status, WAN, PC, GSMCall forward from GSM to VoIP ... GSM Module: Type: 850MHz, 900MHz, 1800MHz, 1900MHz Power: Input AC100V ~ 240V, output DC12V/2A +-10%Power consumption: 12W maximum Operating temperature: 10°C to ...