Flushable Transmitters for Sewer & Septic Line Locating

Pinpoint underground sewer lines, septic tanks, and nonmetallic utilities with precision using professional-grade flushable transmitters. Designed for real-world field conditions, these sondes transmit reliable signals through pipes and drainage systems—making it easy to locate, trace, and diagnose buried infrastructure without excavation.

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FTP-8 512Hz Flushable Sonde Transmitter for Pipe Locating

FTP-8 512Hz Flushable Sonde Transmitter for Pipe Locating FTP-8 | 512 Hertz Flushable Transmitter

The FTP-8 flushable transmitter works in cast iron and nonmetallic lines along with septic tanks. The flushable transmitter uses the 512 Hz frequency and will work with our Digital LineFinder series along with the Ferris analog receiver.

  • Black On/Off push button
  • Floats for easy retrieval
  • Flashing LED indicates that the sonde is transmitting
  • Red LED will come on to indicate when the battery is no longer good
  • Batteries are not replaceable
  • Eyelet for easy attachment to a fishing line

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ATP-12 Flushable Sonde Transmitter for Pipe Locating

ATP-12 Flushable Sonde Transmitter for Pipe Locating ATP-12 | 223 KiloHertz Flushable Transmitter

For use with Prototek’s Ardy receiver. The ATP-12 flushable transmitter transmits using the 223 KiloHertz frequency. It is your go to when locating with our Ardy receiver in nonmetallic lines and septic tanks.

  • Black On/Off push button
  • Batteries are not replaceable
  • Floats for easy retrieval
  • Flashing LED indicates that the sonde is transmitting
  • Red LED will come on to indicate when the battery is no longer good
  • Eyelet for easy attachment to a fishing line
HTP-15 8kHz Flushable Sonde Transmitter for Non-Metallic Locating

HTP-15 8kHz Flushable Sonde Transmitter for Non-Metallic Locating HTP-15 | 8 KiloHertz Flushable Transmitter

The HTP-15 flushable transmitter transmits using the 8 KiloHertz frequency. It is your go to when locating with our LineFinder 2200 receiver in nonmetallic lines and septic tanks. If you are locating around power lines this powerful highly efficient frequency will greatly reduce interference.

  • Black On/Off push button
  • Floats for easy retrieval
  • Flashing LED indicates that the sonde is transmitting
  • Red LED will come on to indicate when the battery is no longer good
  • Batteries are not replaceable
  • Eyelet for easy attachment to a fishing line

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