PQ3350-1-NIST / Extech Power Quality Meter with NIST Data logging of single and 3-phase/3-wire or 3-phase/4-wire systems (up to 52,428 single phase readings or 17,476 3-phase readings)
PQ3350-3-NIST / Extech Power Quality Meter with NIST Data logging of single and 3-phase/3-wire or 3-phase/4-wire systems (up to 52,428 single phase readings or 17,476 3-phase readings)
PQ3450-12-NIST / Extech 3-Phase Power Analyzer/Data Logger with NIST Large dot-matrix, sun-readable, numerical, backlit LCD with easy-to-use Onscreen menu.