... Slow(S), Impulse (I). Max hold, with AC/DC signal output connectorCan be equipped with filter connectorOverload indicationFull scale +10±0 ... , 4 pieces of 1.5v batteries, with external DC voltage input holeWith AC accessories, it can be used to test with ... signal inside, and can be used for calibration referenceDC,AC output portDimensions 290mm×106mm×65mmWeight 0.67kg(without batteries) led indication ...