UT661 Series Pipeline Blockage DetectorsThe UT661 series pipeline blockage detectors can quickly locate blockages clogging inside pipelines. They are able to detect pipes from a maximum distance of 50cm, the signal wire can be inserted into pipelines up to 25/35m for UT661C/D respectively. UT661 series are easily operable, and can be used to detect steel, iron, and pvc pipes.Models in UT661 Series: UT661C, UT661DFeatures of UT661 Series Pipeline Blockage DetectorsCertificates: CE, RoHS The location of the blockage in the pipe can be detected Measurable pipe material: plastic pipes, metal pipes Maximum detection distance(depth): 50cm Buzzing prompt and Flash promptSpecifications of UT661 Series Pipeline Blockage DetectorsSpecificationsUT661CUT661DTransmitterYesYesSignal wire25m35mReceiverYesYesMaximum detection distancedepth50cm50cmTransmitter currentShutdown current: