... Panel Meter measures and displays real time AC phase voltage, line voltage, and current with LED display in 3P3W or 3P4W ... 5VA, 2. AC85~265V or DC85~330V(Customized)Working frequency withstand voltage: Between power supply/input /output: AC2kV/min·1mA Insulation ... resistance: ≥100MΩ (EFT): 2kV 5kHz Immunity to surge voltage: 2kV 1.2/50usInstallation: DIN sliding-way, wiring behind Case ...