Sondes are small, autonomous, battery-powered transmitters. Sondes are inserted into non-metallic ducts or pipes and can be located on the surface by a sonde detector or a underground network detector with a sonde mode.
 
The Sonde Nozzle will work with any jetter (min water flow 25 lpm). It connects easily to the high pressure hose and will pull itself into the pipe for the full lenth of the hose.