This device belongs to the Vigilohm series, which is designed for monitoring ungrounded power supplies (IT systems) in accordance with installation and product standards. This insulation fault detection is only possible when connected to the IM400 series, XM300, or XM200. This device is intended for monitoring up to 12 AC, DC, and ACDC outputs with a core voltage of up to 1000 V. Configuration is done from the front of the device, via the HMI screen, or through the communication interface. The settings pertain to the alarm thresholds. It indicates which output has an insulation fault. The autotest starts automatically every 5 hours and as needed. If the insulation resistance falls below the set threshold, an alarm is triggered via the IFL output relay and the HMI. Once no fault is detected, the alarm is cleared and the alarm relay returns to its normal state. The device can be powered by a source of 110 VAC to 440 VAC or 110 VDC to 440 VDC, all with a tolerance of plus or minus 15%.