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Water leak detector Success AT-407N

Water leak from pipelineWater

The portable acoustic water leak detector with protection of surrounding noises.

Key features

  • Audio signal spectrum visualization.
  • Sensitive acoustic pick-up with replaceable contact rod and removable composite handle for operation in the soft soil.
  • Digital signal filtration for accurate leak detection.
LCD screenLCD
Utility detection depthLeak


Advanced acoustic water leak detector for metal and non-metal underground pipelines laying under paved and unpaved surfaces. High-sensitive ground microphone ensures detection of leakage noise at depth up to 3 meters in pipes with pressure starting from 2 bar.

  • Leakage noise level measurement.
  • Inspection of any pipes (metal, PVC etc.).
  • Easy to understand indication.
  • Filtering of the noise for easy location.


  • AT-407N saves your money for digging and prevents waste of water (up to 2000 US dollars per month can be saved).
  • AT-407N saves your time. Remote survey of the pipes, pressure measurement and flow meter installation or false digging may take a lot of time. Pin-pointing of leakage with acoustic sensor can save up to 5 hours per day.
  • Effective leak detection in underground and wall pipes.

Brief description

  • Advanced digital noise filtering for effective water noise detection.
  • Visual indication of detected signal level for better location.
  • IP54 protection of equipment for most severe operation conditions.
  • Power Bank support for extended operation time.
  • AA accumulators and batteries support.
  • Light weight.
  • Manufacturer warranty 1 year.


  • Water leak detection from plastic or metal underground pipelines up to 3 m depth with pressure starting from 2 bar.
  • Water leak detection inside the house in wall pipes.

Acoustic sensor AD-227 allows to find the leak

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

Specifications receiver AP-027

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 220x102x42 mm
Weight of the electronic unit 0,46 kg

Standard set

1 Receiver AP-027
2 Acoustic sensor AD-227
3 Carrying rod for AD-227
4 Extension carrying rod for AD-227
5 Contact rods for AD-227
6 Magnet for AD-227
7 Holder for AP-027
8 Headphones
9 Screwdriver
10 Manual and passport
11 Set carrying bag


Receiver AP-027

Demonstration & review of digital location receiver AP-027.

Multifunctional search receiver AP-027

Accessories available for digital location receiver AP-027.

Buttons mapping AP-027

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.

Download full product catalogue