PowerAlert monitors and controls hundreds of UPS Systems,
PDUs, sensors, and the computers and equipment they support.
And yes, it's 100% free!
For home and small business applications, it will monitor power conditions, control your UPS system and enable automatic computer shutdown in the event of a power failure.
Used when computers cannot be directly connected to a UPS, it monitors devices over your network and shuts down your computer when it detects an "on battery" event.