Features: 1.Power output controllable by software: 2W-10W (Customized accept) 2.Two interface at same time.RS232 & RS485 3. Frequency resetable in specific band. 4. Pin 1/4/6/9 expandable 5. High power, long transmission distance 6. Transparent data transmission for all kinds of Micro-controller,PC,RS485 equipment and other devices.