OK, I'm sure one of you techies know a solution that will fit my needs. Basically, I'm looking for something like this: http://www.watch.impress.co.jp/akiba/hotline/20030315/image/npl2.html Unfortunately, I can't find any more information about it. Ideally, I want a loud audible alarm. A flashing siren is a bonus i.e. something that will really get my attention. Something that can connect to a PC via USB or even Parrallel port, Serial port, WiFi, Bluetooth or Ethernet. Actually a networked device would be ideal so that it could be located where it is most needed/convenient. Lastly, it needs to be programmable with an API of sorts so that I can control it's operation programatically obviously. I'm sure there is a solution out there I'm just not looking in the right place. About 8 or 9 years ago I saw a siren attached to some computers which went off when there was a network failure or problem. This was at an ISP data center though. Suggestions please. I don't want to use PC speakers with volume turned up!