The Flash - Recorder-3 M6 self-recording voltmeter is made in an aluminum case with a DIN rail mount, designed for installation in power supply cabinets or monitoring various parameters, for example, the supply network monitoring (voltage and current phases), recording and reporting emergency to a remote computer, with recording of the event itself with a high sampling rate for further analysis. The large memory of the removable flash disk allows you to store data files for a long time, when the flash disk is filled to the set value, the device provides space by deleting the oldest files, so the device can work continuously and for a long time without maintenance. The data and settings of the device can be accessed remotely if there is a network or the Internet.

Description here: ManualFR3M6