Using PRO edition of Serial Port Monitor with it's trial version
Free trial version of Serial Port Monitor works as unlocked PRO version for 14 days. Thus it will let you test the features available only in Professional Edition. You may get your fully functional charge-free version from: http://www.eltima.com/download/serial_port_monitor.exe
If you would like to know the differences between Standard and Professional editions please visit the page: http://www.eltima.com/products/serial-port-monitor/