Pogo! Products has released its first Springboard module, the DataQuake, which VisorCentral previewed during Comdex 2001. Available in 8MB and 16MB versions, the DataQuake gives users storage capacity and silent alarm functionality (both blinking LED and vibrating alert).
I have the module and like the plethora of options that are available. You can customize your alerts so that almost any sound from the Visor is blink and/or a vibrating alert.
DataQuake is now available for $69.00 for the 8MB version and $99.00 for the 16MB version.