Use your computer as an environmental control system by adding one of these infrared transmitters and operating it with the PROGress software included.  You can then customise the software to control your TV, DVD, stereo as well as other appliances with infrared receivers such as air-conditioner, infrared telephone, remote appliance switch and more. The PROGress software includes a number of symbols for commonly controlled devices such as TV, telephone, stereo.  You can also add your own symbols or pictures.

The Relax is a programmable scanning infrared transmitter that enables single switch access to TV, VCR, stereo or any other appliance that can be operated using infrared remote control. It allows full control of infrared appliances with a single switch. Commands are trained from existing remotes. Relax II can control up to four appliances, with 10 separate functions (eg power, channel up, play, stop etc) for each.  It also has the additional capacity to control up to 10 wireless X10 modules.