Made in Germany   Made in Germany   Detection Technologies since 1998

Water detector and cavity detector GeoSeeker

Are you looking for underground water resources or hidden cavities up to depths of 250 meters (820 feet)?
The GeoSeeker is a professional geoelectrical water detector and cavity detector that measures the ground resistivity and visualizes its scan data in incredible 3d graphics. It is a very mobile and easy to operate geoelectrical detector designed and manufactured in Germany.

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The GeoSeeker utilizes a geoelectrical measurement procedure based on Schlumberger to read the soil resistivity. Based on that ground resistance the detector is capable to locate underground water deposits, water-bearing gravel and groundwater level as well as cavities like caves, tunnels, chambers and the like. Thus the geophysical detector can be deployed as water finder or cavity detector at the same time.

Certification Labels
Made in Germany

Made in Germany

Wireless data transmission

Wireless data transmission

Compliance with CE policies

Compliance with CE policies

The GeoSeeker's hardware components are completely controlled by a modern Android Tablet PC. All commands and measurement results are transferred wireless via Wi-Fi. Using the pre-installed software application you simply select one of three supported scan modes:

  • Active Scan (Accurate)

    While using this scan mode the GeoSeeker utilizes two electrodes to inject electrical power into the underground soil. Two additional electrodes are measuring the potential difference (fall of voltage) at specific scan points to calculate the final resistivity value. This mode is used to detect underground water deposits, hidden caves or even impervious layers and barriers within the underground soil. In active scans you will be able to define a specific depth range in that you are going to conduct your measurement. So you will define a starting and ending depth between 5 meters (16 feet) and 250 meters (820 feet).

  • Active Scan (Quick)

    This scan mode is a quick version of the accurate scan. It is also injecting electrical current into the underground and measuring the potential difference (fall of voltage) to calculate the resistance of the soil.

  • Passive Scan

    While using this scan mode the GeoSeeker only utilizes two electrodes to read the natural occurring voltage of the underground (no electrical power is injected into the underground). This mode is used to detect underground flowing water only.

The graphical user interface of the water detector GeoSeeker is available in the following languages:

  • Deutsch
  • English
  • Français
  • Español
  • Italiano
  • عربي
  • Ελληνικά
  • Türkçe
  • 中文
  • Pусский
  • Nederlands
  • فارسی

The GeoSeeker's software application is providing simple step-by-step instructions to assist you in completing the measurement. You simply follow these pictured instructions until your measurement has been finished. After completing the measurement a graphical 3d representation of the measure values is created and displayed on the screen of your Tablet PC. Some color adjustment options are provided to optimize the graphical 3d visualization of your underground water deposits, water-bearing gravel and groundwater level (shown in bluish colors) as well as cavities, caves, tunnels, chambers or impervious layers (shown in reddish colors).

The GeoSeeker's hardware is built-in into a waterproof and shock-resistance Peli case. So your geoelectrical equipment is well packed and always ready for transportation.

Here we present some relevant discoveries, which have been located. If you also made a discovery or know somebody who made a fantastic find with our metal detectors, just write us an email or use our online form!

Our water detector OKM GeoSeeker, that we handed over in December 2017 to "Aktion Pro Afrika e.V.", a nonprofit organization, has arrived in Mali and already provides successful measurement results during the search for underground water resources. Thanks to OKM GeoSeeker and its deep water detection technology, the water scarcity in Africa is a thing of the past.

In 2014 the team of OKM Emirates FZE (UAE) and its local business partners from GDI - Geological Detection and Imaging (Lebanon) tested the recently announced cavity and water detector GeoSeeker. Supported by an former adviser of the geological department in Lebanon several practical tests were performed in the mountain area of Beirut. In heavy mineralized rocky soil the team was able to detect underground water deposits in a depth of 70 - 90 meters.

  GeoSeeker - User's Manual (English)

In the following table you can see the complete delivery contents and all optional accessories. The used symbols have the following signification:

x times includedx = x times included
not included = not included
optional available, only for additional charge = optional available, only for additional charge
AA battery 1.5 VYes8
Android Tablet PCYes1
Charger for ControllerYes1
Charger for Power BoxYes1
Extension Cable ( 2 m )Yes2
Holder for Tablet PCYes1
Power BoxYes1
Power Cable Drum ( Ø 290 mm )Yes2
Power Pack incl. charger and travel adapterYes1
User's manualYes1
Voltage Cable Drum ( Ø 120 mm )Yes2

The following technical indications are medial values. During operation small variations are quite possible.

Controller (Receiving Unit)

Dimensions (H x W x D)
130 x 270 x 110 mm
0.6 kg
Weight (with mounted cable drums and batteries)
2.1 kg
Power Supply (8 AA batteries)
8 – 14 VDC
Operating Time (charged batteries)
min. 16 hours
Charging Time (empty batteries)
typically 3 hours, max. 5 hours
Input (for Charger)
12 VDC, 1.5 A
80 MHz Cortex M3
16 bit
Communication with Tablet PC
WLAN-Accesspoint, 2.4 GHz band, channel 6, WPA2
Communication with Power Box
2.4 GHz band, on-demand, proprietary
Effective Range (differential)
-1400 to +1400 mV
Input Resistance (static)
approx. 12 MO
Data Sampling Rate
4096 Hz (64 times oversampling of a 512 samples mean value)
Measurement Period per Scan Point
min. 16 seconds

Power Box (Sending Unit)

Dimensions (H x W x D)
230 x 550 x 360 mm
15.8 kg
Weight (with mounted Electrodes)
18 kg
Internal Power Supply
Lead Acid Battery (2 x 12 V, 10 Ah)
max. 390 V, 0.5 A, 20 W
Operating Time (min. Power)
approx. 100 hours
Operating Time (average Power)
approx. 40 hours
Operating Time (max. Power)
approx. 8 hours
Charging Time
max. 8 hours
Input (for Charger)
24 VDC, 2 A
Communication with Controller
2.4 GHz band, on-demand, proprietary


Dimensions (L x W x D)
440 x 120 x 35 mm
0.52 kg

Power Cable Drums (Ø 290 mm)

Dimensions (H x W x D)
360 x 290 x 200 mm
6.5 kg
Cable Length
255 m

Voltage Cable Drums (Ø 120 mm)

Dimensions (H x W x D)
120 x 120 x 45 mm
0.65 kg
Cable Length
26 m

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