Irmon.exe
(Microsoft)
Infrared Monitor. System Tray icon which enables you to monitor your Infrared connections : you can see which infrared device you are communicating with and monitor file or data transfer. Typically installed by default on laptops where infrared is most commonly used (with mobile phones), rather than on desktop PCs.
Recommendation :
If you do not want that icon cluttering your System Tray (ie: you never use Infrared), go to the "Wireless Link" icon in the Control Panel and disable Display an icon on the taskbar.