FTP-8 | 512 Hertz Flushable Transmitter


Affordable! Flushable! Floatable! Reusable!

Made in the U.S.A.

Prototek’s Blue FTP-8 512 Hertz Flushable Sonde Transmitter is the Gold Medal Standard for flushable sonde transmitters. First off, you must have a 512 Hertz receiver to use these transmitters as they will not work with an AM/FM radio or with an app on your Smartphone device. These flushable transmitters are perfect for locating Septic Tanks and in addition to an affordable price, these little blue magic pills have a four hour battery lifespan and can float. Therefore, you could easily retrieve the transmitter, and after a quick yet thorough cleaning, use each transmitter at least three more times!

However, while we here at Prototek recommend using the Ferris FR-1 Receiver or either of our LineFinders, the LF-1 or the LF-3, these amazing little blue transmitters will be able to work with any 512Hz Receiver, whether it is a Made in America Prototek Ferris Receiver, one of our LineFinders (Also Made in America!) or an off brand 512 Hertz Receiver.

The FTP-8 512 Hz Flushable Transmitter is perfect for a Do It Yourselfer’s small project around the house or for a Septic and Sewer Company looking to Pump in the Profits and Dump out the Competition. Remember, you must have a 512 Hertz Receiver! We’ve got three!

Looking to have this product delivered to Canada or Mexico? Check out our 3 pack of FTP-8 512 Hz Flushable Transmitters on Amazon that can ship to anywhere in North America! In other words, let’s say you live on the shores of the Arctic Ocean in the Northwest Territories. Prototek’s got you covered, eh? What about Quintana Roo in the Yucatan on the Caribbean Sea? ¡No hay problema!

Get a 12.5% discount on flushable transmitters when you buy 20 or more

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.


512 Hz Flushable Transmitter

  • Frequency: 512 Hz
  • Dimensions: 2-1/4” L x 1-3/16” W x 1” H
  • Line size: 3 inches and up
  • Range: 8 feet in cast iron
    12 feet in nonmetallic
    Range is determined under best conditions using a Prototek Receiver
  • Signal tone: Continuous
  • Battery: 4 hours
  • On/Off: Push Button
  • Compatible with: Any 512 Hz Receiver.  (Will not work with the Ardy 223 kHz receiver.)


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