10/31/2026
😍 Nokta Invenio Pro Smart 3D Imaging Metal Detector System 😍
by Nokta Detection Technologies starting at $4,990.00
The Nokta Invenio Pro is a VLF imaging detector with three selectable frequencies, 5, 14 and 20 kHz, that combines positional tracking with graphical processing to draw 3D representations of what it detects. The Pro package carries three waterproof DD coils, the INV28, INV40 and the large INV56, a spare 9500 mAh system box battery and a waterproof (IP67) hard transport case.
Configuration
System
Invenio Pro system box with 7 in TFT screen; shaft with IPTU sensor, wireless link
Frequencies
5, 14 and 20 kHz, selectable one at a time
Coils
INV28 28 x 18 cm, INV40 40 x 35 cm and INV56 56 x 40 cm, waterproof DD
Spare battery
7.4 V, 9500 mAh system box battery, about 9 hours
What is in the box with the Nokta Invenio Pro
Nokta's standard contents for the Invenio Pro
* Nokta Invenio Pro system box
* System box carrying case
* Shaft and handle
* IPTU sensor
* INV28 waterproof DD search coil, 28 x 18 cm (about 11 x 7 inch)
* INV40 waterproof DD search coil, 40 x 35 cm (about 15.7 x 13.8 inch)
* INV56 waterproof DD search coil, 56 x 40 cm (about 22 x 15.7 inch), with carrying bag
* Search coil covers
* Coil carrying bags
* IPTU sensor carrying bag
* KOSS headphones
* Spare 7.4 V, 9500 mAh system box battery
* AC charger and car charger
* USB cable
* Harness, carrying belt and bungee cord
* Protective covers
* Coil mounting hardware
* Screen sunshade
* Waterproof (IP67) hard transport case
Who the Nokta Invenio Pro suits
The Invenio Pro takes the Invenio imaging platform and adds frequency and coil options: selectable 5, 14 and 20 kHz, plus the large INV56 coil. We think it makes sense for customers investigating a wider range of target sizes and locations. Like every Invenio, it builds its images from detection data; it does not photograph what is buried.
How the Invenio Pro builds its images
IPTU sensor: the Integrated Positional Tracking Unit follows the coil's left-right and forward-back movement and its height above the ground. Picture a suspected buried metal container. You scan the area in a steady pattern, and the system combines the position data with the detector's responses to draw a graphical representation. Technique matters: Nokta says the coil must stay parallel to the ground, with a recommended sensor height of 30 to 50 cm (12 to 20 inch). Uneven movement or coil height will skew the result.
3D imaging: on an old property where records suggest a large metal object is buried, the graphs can help you decide where further investigation is justified. They cannot give the exact shape, composition or identity of every object; the result is an estimate built from detector signals.
Ground Anomaly and Cavity mode: designed to help identify certain ground anomalies, such as a void or disturbed ground. A cavity indication is not proof of a tunnel, a chamber or buried treasure; ground conditions and other factors can produce misleading results. The Invenio is no substitute for a professional geophysical survey or an excavation safety assessment.
About the Nokta Invenio Pro
The shaft and the system box talk to each other over a 2.4 GHz wireless connection, and the system box carries a 7 inch, 800 x 480 TFT screen with a backlight, plus an LED flashlight for the scan area. Nokta says the Artificial Neural Network enables the device to provide superior shape extraction; we read that as better drawings from the detection data, not as identification of what is buried. You can save 3D graphs and screenshots and transfer them to a PC, vibration can signal a target, Nokta delivers firmware updates over USB from a PC, and the menus come in 17 languages.
Batteries: the shaft and the system box run on separate batteries. Nokta gives the shaft a 7.4 V, 5400 mAh battery for about 9 hours and the system box a 7.4 V, 5500 mAh battery for about 5 hours, and the Pro adds a spare system box battery; the shaft and system box batteries each take about 2 hours to charge, and the spare about 4 hours.
Water: Nokta says not to immerse the device or its accessories in water, except for the search coil and the IPTU sensor, so keep the system box and shaft dry. The waterproof (IP67) hard transport case protects the whole system between sites.
Settings that matter on the Nokta Invenio Pro
Three frequencies: we use 5 kHz for certain larger, higher-conductivity targets, 14 kHz as the balanced general-purpose setting and 20 kHz for smaller or lower-conductivity targets. You select one frequency at a time; the Invenio Pro is not a simultaneous multi-frequency detector.
Imaging needs careful interpretation: scan a buried iron object and the Pro draws a graphical representation that may suggest its approximate location and dimensions. It is not a photograph or a precise underground map. Soil, nearby metal and scanning technique all influence the result. Nokta notes the IPTU sensor must be used correctly for accurate shapes, and calls its target IDs probable, estimated values.
Which Invenio Pro coil to use
Nokta's Pro package has three coils: INV28 (28 x 18 cm, about 11 x 7 inch), INV40 (40 x 35 cm, about 15.7 x 13.8 inch) and INV56 (56 x 40 cm, about 22 x 15.7 inch). We use the small coil for detailed searching, the medium coil as the compromise and the largest for coverage and larger targets. Picture a broad historical site where larger buried objects may be present: the INV56 covers more ground and may help on certain larger or deeper targets. It is not the coil for small objects or heavily contaminated ground.
Extra battery: the spare system box battery in the Pro package is good for extended scanning sessions. The shaft and the system box run on separate batteries, so keep an eye on both.
Invenio Pro or Invenio Standard
We would pick the Pro when you specifically need the extra frequency flexibility, the larger INV56 coil and the extended package. For basic Invenio imaging, the Invenio Standard may be sufficient.
One mistake to avoid with the Nokta Invenio Pro
Assuming the extra frequencies let it identify buried gold accurately. No metal detector can reliably determine the composition of every buried object from an image.
Our recommendation on the Nokta Invenio Pro
We recommend the Invenio Pro to customers who want the broadest capabilities in the Invenio family. Its strongest points are graphical imaging, three selectable frequencies and three search coils. Related systems are in our 3D imaging metal detectors.
Nokta Invenio Pro specifications
Specification
Nokta Invenio Pro
Technology
VLF
Frequency
5, 14 and 20 kHz, one at a time
Search modes
3 motion (All Metal, Fast, Deep); 3 non-motion (Basic, Expert, Ground Anomaly and Cavity)
Target ID
00 to 99, estimated values
Sensitivity
01 to 99
Ground balance
Automatic, Manual, Tracking
Audio
150 to 700 Hz adjustable; vibration
Display
7 in TFT, 800 x 480, backlight; LED flashlight
Positional tracking
IPTU sensor, recommended height 30 to 50 cm (12 to 20 in)
Coils
INV28 28 x 18 cm; INV40 40 x 35 cm; INV56 56 x 40 cm; waterproof DD
Shaft link
2.4 GHz wireless, shaft to system box
Weight
System box about 1.7 kg (3.7 lb) with its 5500 mAh battery; shaft and handle 2.4 kg (5.3 lb)
Length
121 to 152 cm (47.6 to 59.8 in), adjustable
Batteries
Shaft 7.4 V 5400 mAh, about 9 hours; system box 7.4 V 5500 mAh, about 5 hours; spare system box battery 7.4 V 9500 mAh, about 9 hours
Charging
About 2 hours (shaft, system box); about 4 hours (spare 9500 mAh)
Languages
17
Warranty
2 years
Nokta covers the Invenio Pro with a 2-year warranty.
Coils and accessories for the Invenio Pro are in our Nokta Invenio collection.
Shop Now 👉👉 https://shortlink.store/mjz3k7nzva5d
