Invenio is the first and single revolutionary step taken towards turning a dream into reality in the metal detector industry!
Invenio represents one of the most dramatic advances in metal detection technology since conventional metal detectors first appeared on the market in the 1930s. While many new features and advancements in technology have been introduced since, Invenio provides the first major step forward in meeting consumer expectations.
While the competition has simply pushed the existing patents and technology forward; none have gone much beyond generating basic beeps and IDs for targets.

On the other hand, users have been expecting a lot more from a detector:
1. To discover deeper targets
2. To know what type of a metal the detected target is
3. To see the real depths of targets
4. The see the real shapes of targets
5. To determine the dimensions of targets
6. To detect ground anomalies/cavities

Nokta Makro Detectors, since its foundation, has been taking steps towards turning this dream of users into reality. After years of extensive Research & Development and advanced engineering studies, Nokta & Makro has achieved the development of the world's first Smart Detector & Imaging system - the Invenio. Nokta & Makro owns the whole technology and know-how used in the Invenio for which 3 different patents are applied for.

Invenio is designed as a platform that can be advanced and it is planned to be integrated with all hobby detectors (coin and relic) as well as gold nugget detectors in the future.


IPTU Sensor

IPTU SENSOR (Integrated Positional Tracking Unit)

Developed by Nokta Makro Detectors, the IPTU unit, with the help of the integrated sensors, computes the right-left, forward-back movements of the search coil precisely and determines its location and height above the ground. With the IPTU sensor, you can follow the start and finish points of the scanned area and view the locations of detected targets. In addition, you can determine the width and the length of the scanned area, the target depth and shape as well as the dimensions with the help of the IPTU sensor.

Invenio Metal Table

Underground Field Test

  • Artificial Intelligence : The Artificial Neural Network enables the device to provide superior shape extractions as well as depth indications by utilizing adaptive learning algorithms!
  • Multi-Purpose : Targets that you can detect with the Invenio: Deep treasures, caches, coins, relics, ground anomalies/cavities such as underground caves, tunnels etc.. In short all you are looking for underground!
  • High Performance and Unmatched Depth : Uncover deep treasures other detectors simply cannot detect.
  • 3 Non-Motion Search Modes : Basic / Expert / Ground Anomaly & Cavity
    3 Motion Search Modes : All Metal / Fast / Deep
  • Invenio Frekans Banner

  • 17 Languages : English / German / Greek / Turkish / French / Italian / Russian / Arabic/ Spanish / Chinese / Persian / Bulgarian / Serbian / Romanian / Dutch / Portuguese / Polish
  • Online Firmware Updates : Stay up-to-date with firmware updates (via USB on PC) and get the most out of your detector.
  • 2.4GHz Wireless Connection : The Invenio system box and shaft communicate wirelessly. In addition, users who do not prefer wired headphones can purchase the optional 2.4GHz wireless headphones.
  • Vibration : When this feature is active, Invenio will vibrate upon target detection. An essential feature for hearing impaired users and noisy surroundings.
  • Invenio Ideal For

  • Excellent Discrimination and Unmasking Ability : Save time by detecting the targets you want while spending less time digging.
  • Fast Recovery Speed : Get ready to find out what other metal detectors missed amongst trash and iron!
  • LED Flashlight and Screen Backlight : Invenio's screen backlight and the flashlight, which illuminates your scan area, enable you to detect in the dark as well.
  • Archive : You can save all 3D graphs and screenshots and transfer them to your PC if you wish.

Package Contents

Invenio Package Contents

1 - System Box
2 - Shaft & Handle
3 - IPTU Sensor
4 - Waterproof DD Search Coil 40x35 cm (INV40) & Cover
5 - Waterproof DD Search Coil 28x18 cm (INV28) & Cover
6 - System Box Carrying Case
7 - Carrying Belt
8 - KOSS Headphones (6.3 mm Jack)
9 - AC Charger
10 - Car Charger
11 - USB Cable
12 - Protective Covers
13 - IPTU Sensor Carrying Bag
14 - Coil Mounting Hardware
15 - Screen Sunshade
16 - Waterproof (IP67) Hard Transport Case

Search Coils




Invenio Metal Detector Brochure (EN)
Invenio Metal Detector Brochure (DE)
Invenio Metal Detector Brochure (GR)
Invenio Metal Detector Brochure (NL)
Invenio Metal Detector Brochure (BG)
Invenio Metal Detector Brochure (PT)
Invenio Metal Detector Brochure (TR)


Invenio Metal Detector User Manual (EN)
Invenio Metal Detector User Manual (EL)
Invenio Metal Detector User Manual (RU)
Invenio Metal Detector User Manual (TR)

2.4 GHz Wireless Headphones

2.4 GHz Wireless Headphones Green Edition User Manual (EN)
2.4 GHz Wireless Headphones Blue Edition User Manual (EN)

Software Update


* Before updating the device, please be sure that the IPTU sensor is attached to the shaft!
* Check and note the current software version before updating the device.

Update Steps:

  • 1. Download the update file.
  • Copy the UpdateInv.tar file in the Invenio folder to a USB flash drive.
  • 2. While the device is on, insert the USB drive into the USB port located at the back of the system box.
  • 3. Remove the battery from the top of the shaft. Insert one end of the USB cable, which is supplied with your device, into the USB port in the battery compartment.
  • 4. Press the OPTIONS button. Select FIRMWARE UPDATE under OTHERS and press OK.
  • 5. When the process window appears on screen, press OK again and wait for the process to be completed.
  • 6. When the window below appears on screen, remove the USB drive and insert the other end of the USB cable instead.
  • Invenio Update

  • 7. The blue LED on the handle will light up and the device will shut down after the process is completed.
  • 8. Turn on the device again. The blue LED on the handle will light up again as well.
  • 9. Wait for the progress bar to be bull. Once the update is completed, the device will shut down once more. Remove the USB cable.
  • 10. Turn the device on and press the OPTIONS button. Check the software version under FIRMWARE UPDATE to make sure that the update has been installed successfully.
  • 11. Finally, select FACTORY SETTINGS and press OK to set all the settings of the device back to factory defaults.

Software Update Files (22.03.2019) - v1.13 (1092)

Download: update-invenio-1092-v113-22032019.zip

Updates Made :
* Minor bugs have been fixed.

Video Update Files (13.11.2018)

Download: video-update-invenio-13112018.zip

Updates Made :
* Minor bugs have been fixed.

Software Update Files (13.11.2018) - v1.13 (1088)

Download: update-invenio-1088-v113-13112018.zip

Updates Made :
* Minor bugs have been fixed.

Video Update Files (26.09.2018)

Download: video-update-invenio-26092018.zip

Updates Made :
* Tutorial videos have been uploaded.

Software Update Files (26.09.2018)

Download: update-invenio-26092018.zip

Updates Made :
* Factory default value of AutoReset setting has been changed to 0 (zero).
* The sensitivity settings for detection and scanning processes have been consolidated into a shared setting for both processes.

Software Update Files (04.09.2018)

Download: update-invenio-04092018.zip

Updates Made:
* Depth has been increased in the Expert mode.
* Minor bugs have been fixed.


Operating SystemEmbedded Linux System
Graphic ProcessOPEN GL
SensorIPTU (Integrated Positional Tracking Unit) Sensor
Operating PrincipleVLF
Operating Frequency14kHz
Audio Frequencies150Hz - 700Hz adjustable
Search Modes3 Non-Motion (Basic/Expert/Ground Anomaly & Cavity) and 3 Motion (All Metal/Fast/Deep)
Iron AudioYes
Tone BreakYes
Notch FilterYes
LanguagesEnglish / German / Greek / Turkish / French / Italian / Russian / Arabic/ Spanish / Chinese / Persian / Bulgarian / Serbian / Romanian / Dutch / Portuguese / Polish
Ground BalanceAutomatic / Manual / Tracking
Frequency ShiftYes
Sensitivity Setting01-99
Target ID00-99
Search CoilsWaterproof DD Search Coil 28x18 cm (INV28)
Waterproof DD Search Coil 40x35 cm (INV40)
Display7" 800x480 18 Bit RGB TFT Screen
LED FlashlightYes
WeightSystem Box: 1.7kg (with 5500 mAh battery)
Shaft and Handle: 2.4kg
Length121cm -152cm adjustable
Shaft Battery7.4 V 5400 mAh LiPo
System Box Battery7.4 V 5500 mAh LiPo
Shaft Battery LifeApproximately 9 hours
System Box Battery LifeApproximately 5 hours
Warranty2 Years
PatentsDisplaying the shape & dimensions of metals, displaying the depth of metals, displaying ground anomalies / cavities

Comparison Chart (Invenio Series)

Nokta Makro Detectors reserves the right to change the design, specifications or accessories without notice and without any obligation or liability whatsoever.