... working hours and so on .TransducersModel M1 for standard, other 3 models for optionalTransducer Cord LengthStandard 2x10 meters, optional 2x ... 32mmWeightLight weight 538g with batteries Product Features:Applicable to Applicable for steel, stainless steel, cast steel, PVC, FRP and ... signal (1-9999Hz optional)Data InterfaceRS232 interface is used for net testing or export the record data. RS-232C, baud ...