Programmable Smart Switches for Labview

[Scripps CO2]

I am curious if anyone knows of any programmable on/off controllers for a 120V power supply that can interface via a RS-232 or USB connection and can easily be controlled by a simple vi.  All I have found thus far is the following from V&P Scientific: http://www.vp-scientific.com/Programmable%20Smart%20Switch.php and wasn't sure if anyone has any experience with these controllers.