... effective value, peak valueTime weighting Fast (F), Slow(S), Impulse (I). Max hold, with AC/DC signal output connectorCan be equipped ... external DC voltage input holeWith AC accessories, it can be used to test with external 220v. Sound calibratorTL 6020 (94dB,1000Hz), ... )It has sine correction signal inside, and can be used for calibration referenceDC,AC output portDimensions 290mm×106mm×65mmWeight 0 ...