Powertronics Probe 100+ - USB Power Line Monitor, Black Detects power problems quickly and economically and includes software to save disturbances on a computer Latches high frequency noise and Indicates Surges and Sags and Latches Power fail and Dropouts Measures common-mode noise and Latches spikes (impulses) Provided with the Probe 100+ is the Probe Communications Software, this software facilitates the recording of AC line disturbances as they occur You can connect your PC to the P100+ to capture and save this important information through its USB Port