The system is based around the IR Master two way IR and X10 control unit. It connects to an IBM PC compatible computer via a RS232 serial cable. Two versions of the IR Master are available. The 100W IR Master requires the WHAM software to be running at all times, the 200W IR Master allows programming to be downloaded to it for stand alone operation. Although all scripts and 2 way activities will work in stand alone mode, time related activities will be ignored since the unit does not have a built-in clock.
System overhead is low.
Wham can run in the background while you do other things on your computer. Add a VGA to TV converter to display the PC control screens on your TVs. These include digital inputs, light sensors, current sensors, and up to 64 individually addressable IR ports. The IR ports are also configurable as transistor low voltage logic outputs that can drive relays or other low voltage input devices. The user controls the system through a series of screens containing buttons.