Complete 4-channel system interface unit for ultra-stable, high precision fluxgate technology DS series current transducers. Powers up to 4 x DS50 to DS2000 at the same time. Features ? Compact 19” rack mount 1U height ? Current transducers’ output signals (current or voltage) available via 4mm banana plugs ? Front LEDs indication of normal operation for each transducer and power LED for DSSIU-4-1U ? Universal autorange (100-240V AC 50/60Hz) AC input voltage or 120–370V DC input voltage.