Top 12 Detectors

Fisher Sonde SR51 Signal Transmitter

SR51 @ 512Hz - use with Fisher 512 Hz Locator
Fisher Sondes are small transmitters used to trace the path of non-metallic pipes and locate blockage in a line. Sondes are inserted into a pipe or duct by means of a push rod and the location found by means of a receiver. Fisher offers 4 sondes for use with your line locator at these frequencies.

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Fisher Sonde SR51 Signal Transmitter
Retail price $355.00
Add to Cart
Cat# 12-2035322
Now Only $337.00
Or Call Toll Free 1-888-535-5926
  • Rugged Design
  • Long Battery Life
  • Outstanding Distance & Depth
  • Operating Frequency: 512 Hz
  • Weight: 8.0 oz
  • Length/Height: 5 1/2 inches
  • Diameter: 2 inches
  • Battery Life: 17.0 hrs
  • Depth: 15 ft
  • Operating Temperature: -20 to +60C
  • End Cap Thread Count: 3/8"-16 x 3/4"
2 Year Warranty:
Fisher warrants the Sonde 51 to be free of defects in materials and workmanship when it is shipped from the factory. The terms of this warranty are fully explained in a warranty registration card that accompanies the instrument. Complete factory and field service facilities support the warranty. *Please call 1-888-KELLYCO for warranty information outside the United States.
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  • Kellyco reserves the right to substitute any free items in accessory packs/kits/options when items are no longer in stock.

Kellyco metal detector logoReasons to buy your metal detector from Kellyco:

  • Fisher provides an excellent two to five year limited warranty depending on metal detector model.
  • Kellyco Metal Detector Superstore provides a rock-solid lifetime program of backup and support. You are welcome to contact us to answer questions and assist you with any problems or concerns as long as you own your metal detector.