LabVIEW VI for reading the Extech EX540 wireless multimeter. The Extech-provided software is Windows-only. This VI is cross platform and works with a Mac.
The Extech EX540 Wireless Module uses a USB-to-serial interface. The chip is a SILABS CP2102 and the Mac drivers are available for download from the Silicon Labs website: http://www.silabs.com/products/mcu/Pages/USBtoUARTBridgeVCPDrivers.aspx
Most of the code in the VI was written by "Wayne.C" and "dman271828" from the National Instruments fourm thread "Extech EX540 Multimeter Serial String Conversion" (http://forums.ni.com/t5/Instrument-Control-GPIB-Serial/Extech-EX540-Multimeter-Serial-String-Conversion/td-p/1628966)