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S9 MiniSonde 33kHz

The S9 MiniSonde 33kHz is a small 9mm (0.35”) diameter transmitter designed to be inserted into non-metallic pipes or ducts, and enables operators to trace the route of small diameter pipes or ducts and to precisely locate any blockages.

The flexibility of the S9 MiniSonde allows the Sonde to travel around bends or pass existing cables, while durable design and construction helps to protect the S9 MiniSonde from damage when travelling around bends or when encountering obstacles within the duct. The S9 MiniSonde is the ideal accessory for small diameter ducts, where flexibility and strength are required.

Locatable to 13′ (4m) and measuring 0.35 x 5.4″ (9 x 138mm). Supplied as a kit that includes Sonde, 2 batteries and case.

Part No: 10/SONDE-MINI-33 

Pack of 10 x batteries for S9 MiniSonde.


S9 MiniSonde 33kHz – TocDem Utilities will not be beaten on price, quality or after sales service. Customer support long after the sale is just what we do. All parts & accessories are kept in stock. TocDem Utilities offers an excellent efficient re-calibration service in its well-established Calibration Workshop. Our service engineers have over 100 years combined specialist electronic and hydraulic experience between them. We believe in investing in people and constantly have our staff re-trained in line with the latest industry techniques.

We offer a full national & international shipping and customs clearance service, which can always be arranged by our friendly experienced administration team.

Detection Depth 4m
Battery 1 x lithium cell
Min. bend radius 130mm
Diameter 9mm (0.35″)
Signal frequency 33kHz
Total operating length 137mm
Battery Life Approx. 10 hours at room temperature, 8 hours at 0ºC temperature
Rod fitting M6 female/adhesive fit

Product offering

The S9 MiniSonde is sold as a kit, containing:

a. S9 MiniSonde
b. 2 x batteries
c. Case
d. User guide

A pack of 10 replacement lithium batteries is also available