GPS Tracker Detector for Cars & Hidden Tracking Devices
Find what is hiding on your vehicle — including powered GPS trackers that may be quiet when you search.
The K9-NFD-200 is a professional tracking device detector designed for close-range searches of cars, vans and interiors. It helps you move from “something may be nearby” to the place where a hidden device is actually concealed.
Design visualisation. The K9-NFD-200 is in development; the production unit may differ in detail.
Designed for real searches
Find hidden GPS trackers even when they are quiet
Many hidden trackers do not transmit continuously. A device may stay quiet for long periods and only send its position occasionally, which makes a normal radio search easy to miss.
The K9-NFD-200 looks for close-range electronic activity from the device itself. This gives you another way to search for a powered tracker even when it is not currently sending a location report.
The display monitors five detection bands at the same time. Rather than simply telling you that “something” is nearby, it helps you narrow the response down to the part of the vehicle or object you are checking.
GPS TRACKERS
Cellular & GNSS trackers
Helps locate powered vehicle trackers, including units that may be silent between position reports.
BLUETOOTH TAGS
AirTag-style devices
Directional close-range searching for compatible Bluetooth tracking tags and similar short-range devices.
HIDDEN ELECTRONICS
Cameras, recorders & other devices
Additional detection channels help identify powered electronic devices concealed in vehicles, rooms, furniture and fittings.
Interchangeable sensors
One detector for vehicles and hidden electronics
The K9-NFD-200 uses two interchangeable sensor heads so the instrument can be adapted to the job in front of you rather than relying on one compromise probe.
K9-NFD-H1
Vehicle tracker head
A slim directional sensor designed for close searches around wheel arches, seats, trim, bumpers and other common hiding places. It is intended for both GPS tracking devices and Bluetooth tags.
GPS trackers · Bluetooth tags · vehicle searches
K9-NFD-H2
Hidden electronics head
A longer sensor for sweeping surfaces, furniture, vehicle interiors and fittings where concealed electronic devices may be hidden. It helps localise powered recorders, cameras and other electronic equipment at close range.
Both connect to the same main unit. Both can be connected at the same time, and all five channels stay live regardless of which one you are listening to.
Apple and Google unwanted-tracker alerts are useful and should be used. They can warn you about many supported Bluetooth tracking tags travelling with you.
But not every tracker is a Bluetooth tag. A cellular GPS tracker can report its position over the mobile network without appearing as a nearby Bluetooth device, and modified or non-standard trackers may not generate the alert you expect.
The K9-NFD-200 is designed for the physical search itself. As you move the sensor around the vehicle, the response helps you narrow the search down to the strongest location.
It is the difference between knowing a tracker may be nearby and working out where it is actually hidden.
Useful first stepPhone-based unwanted-tracker alerts can identify supported Bluetooth trackers nearby.
Protocol dependentA phone can only identify signals and tracker behaviours it is designed to recognise.
Cellular-only trackersA tracker that does not expose a recognised Bluetooth signal needs a different search method.
Close localisationThe NFD-200 is intended to help narrow a response down to the physical hiding place.
Designed and built in Northampton
Designed and built in the United Kingdom
The K9-NFD-200 is designed and developed by K9 Electronics in Northampton. It is our own instrument, built from our experience in RF detection, surveillance detection and specialist electronics.
We are not rebadging an imported detector. The hardware, software and user interface are being developed around the way the instrument will actually be used in vehicle and TSCM searches.
In-house RF designDetection electronics developed internally for close-range localisation.
Own firmwareDisplay and controls developed around practical search and localisation.
UK manufactureDesigned and manufactured in the United Kingdom by K9 Electronics.
Choose your interface
Colour display or simple analogue operation
The sensor system is being developed around two styles of main unit. Choose the colour display when you want more visual information, or the analogue version when you prefer a simpler meter-and-headphones approach.
K9-NFD-200
Colour display model
Shows all five detection bands together, with a live trace and clear level information to help you see changes as you move the sensor around the search area.
K9-NFD-100
Analogue meter model
A planned simpler interface using a moving-coil meter and headphone monitoring. Intended for operators who prefer a direct visual and audible response without a colour screen. Final compatibility with the two-head platform will be confirmed before release.
Planned supply configurations include either sensor head or both. Final main-unit/head combinations will be confirmed on release.
Preliminary specification
At a glance
Final specifications and supply configurations will be confirmed on release.
Detection bands
Five, across two interchangeable heads
Vehicle tracker head (K9-NFD-H1)
GPS/GNSS tracker localisation and Bluetooth tag searching
Hidden electronics head (K9-NFD-H2)
Three additional detection bands for powered concealed electronics
Display
K9-NFD-200: 3.5in colour screen, live waveform, per-band level. K9-NFD-100: moving-coil meter
Audio
Headphone monitoring of any selected band
External output
BNC connection for optional external analysis equipment
Power
Internal rechargeable cell, USB-C charging
Construction
Machined and anodised aluminium
Origin
Designed and manufactured in the United Kingdom
Tracker detection guides
Choosing the right way to find a tracking device
Different trackers behave in different ways. These practical guides explain what a GPS tracker detector can and cannot do, and which type of detector is appropriate for a vehicle search.
BUYER GUIDE
Professional GPS Tracker Detectors
What to look for when choosing equipment to find GPS trackers, Bluetooth tags and hidden tracking devices.
