The Dual Frequency Sonde is a small battery powered transmitter.

It allows users to trace non-metallic sewers, ducts, drains or pipes by producing a signal which can be traced by cable avoidance tools. It can also be used to locate blockages or collapses in underground services.  Typically it is attached to a drain rod, however It can also be fitted to other moving objects such as boring tools or cameras.

Features:
- Dual Frequency Modes
On a busy congested construction site background interference can make Sonde location difficult. The new Dual Frequency Sonde enables tracking in either 8 kHz or 33 kHz modes, making it more flexible and convenient to locate.

- Small & Compact Design
Measuring only 38mm in diameter and 130mm in length, the Sonde is designed specifically for restrictive environments. Built to an IP67 standard the Sonde can be fully submerged and can cope with the harshest of environments.

- High Signal Range
The Dual Frequency Sonde offers a typical signal range of up to 5 metres!

- LED Indicator
Other Sonde's offer nothing in the way of user feedback - It's often difficult to tell whether they are switched on and transmitting a signal. The Dual Frequency Sonde has a bright LED which flashes to indicate signal output and changes colour depending on the frequency in use. For example in 33 kHz mode the LED will flash green, however in 8 kHz mode the LED will flash orange.

- Standard Battery Operation
Powered by a single AA battery you can typically expect 10 hours of continuous use. With the built in PowerSave function the Sonde will automatically turn itself off after 2 hours of continues use,  conserving battery power and preventing unwanted signal transmissions.

- Connectivity & Flexibility
The Sonde has a standard M10 male screw thread used for most connections, and comes complete with a drain rod adapater and a male to female thread converter.

Specs:
Batteries Type - AA, LR6, MN1500, Alkaline
Battery Life - Typically up to 10 Hours
Size - 38mm diameter, 120mm long
Frequency - 8.192 kHz & 32.768 kHz
Operational Depth - Typically up to 5 metres
Rod Fitting - M10 Male Thread