Hardware Monitor Widget is the Dashboard version of its "bigger brother" Hardware Monitor. You need a working registered copy of Hardware Monitor in order to fully use this widget. The applications are designed to give you access to all sensor readings Mac OS X uses to monitor and cool your computer.
What's new in Hardware Monitor Widget
Added support for the Mac mini (Late 2012), the Mac mini Server (Late 2012), the MacBook Pro Retina 13-inch, the MacBook Pro Retina 15-inch (Early 2013 Revision), the MacBook Pro Retina 13-inch (Early 2013 Revision), the iMac 21-inch (Late 2012), and the iMac 27-inch (Late 2012).
Enhanced support for certain third-party batteries on mobile computers.
Enhanced support for processing sensor readings for sensors indicating offline or error states.