The IT413 Megohmmeter belong to a series of highly accurate resistance devices that have a 6 digit display. These Megohmmeters have been developed specifically for technical service and for difficult measurement conditions. One of the advantages is the built in protection to avoid errors originating from loss of current. The Megohmmeter contains a microprocessor and both optical and visual alarms. Factory calibration ensures the most accurate measurements with this series of Megohmmeters.