Detection and locating, measuring equipment
Water leak detectors, cable and pipe locators

Water leak detector Success AT-407N

Basic acoustic water leak detector for metal and non-metal underground pipelines under paved and unpaved surfaces.


  • AP-027 digital location receiver
  • acoustic sensor AD-227
  • visual and audio indication of the signal
  • omission of parasitic noise
  • precise sensitivity adjustment


Brief description

  • Storage of 31 signal level with a graph displayed
  • Acoustic sensor spectrum with ability to choose frequency minimum background noise
  • Graphic visualization (moving chart) of sequence of measurements, max and min signal levels
  • Sound indication
  • Protection from random acoustic noise
  • Choice of bandwidth
  • Two-segment indication of frequency spectrum (and “filtered”) signal
  • Light weight
  • Warranty: 1 year


  • water leak detection from the pipelines (plastic or metal) underground up to 3 m depth
  • water leak detection inside the house

Sensitive acoustic sensor AD allows to find the leak

  • Under paved and unpaved surfaces
  • By direct contact on the pipeline
  • By placing the sensor against the wall


Receiver AP-027 Technical specifications

Leak detection
Type of accepted signal Continious signal
Frequencies of the receiver’s filter Range limitation "below" 0,1 / 0,15 / 0,21 / 0,31 / 0,45 / 0,65 / 0,95 / 1,38 kHz Range limitation "above" 2,00 / 1,38 / 0,95 / 0,65 / 0,45 / 0,31 / 0,21 / 0,15 kHz
«Broadband», (operating mode) 0,09 to 2,20 kHz
Gain factor 120 dB
Visual indication
  • Liquid-crystal display-symbols and meaning of the chosen modes and parameters.
  • animated (moving) scale of the output signal level
  • digital value and animated (moving) scale of the output signal level
  • graphic (moving diagram) of the output signal level - frequency content of the output signal level
  • digital and graphic display of output signal levels kept in the "memory"
Sound indication Headphones natural broadband or filtered signal
Supply Voltage 4 to 7 V. - alkaline batteries АА type 1,5 V (4 pcs.).
Time of continuous operation not less than 20 hours
Ambient temperature -20°С to +50°С
Ingress protection rating IP54
Receiver AP-027 dimensions 220 × 102 × 42 (mm)
Weight of the electronic unit 0,46 kg

Standard set

Standard set:

  • Receiver AP-027
  • Acoustic sensor AD-227
  • Carrying rod for AD-227
  • Extension carrying rod for AD-227
  • Contact rods for AD-227
  • Magnet for AD-227
  • Holder for AP-027
  • Headphones
  • Screwdriver
  • Manual and passport
  • Set carrying bag


Compact acoustic sensor ADM-227

ADM is a mini sensor with magnetic base and extension rod, which is used for pipe diagnostics in hard-to-reach places and survey of valves.

AA accumulators with charger

Set of type AA rechargeable accumulators and chargers for AP-027 and AP-014.




AP-027 receiver

Demonstration & review of digital location receiver AP-027.

AP-027. Multifunctional search receiver

Accessories available for digital location receiver AP-027.

AP-027 buttons mapping

This video shows hows the controls of AP-027.

How to locate a leakage with acoustic water leak detector

This is a brief demonstration of our most demanded water leak detector AT-407N.

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