The Sewer Sonde 33KHz is a self-contained, battery-operated sonde, measuring 2.51″ x 6.61″ (64mm x 168mm). It can be connected to a Flexrod for locating pipes and ducting etc. It transmits on 33kHz and can be normally located to a maximum depth of 26′ (8m).

Size: 1.53″ x 4.13″ (39mm x 105mm)