Skip to content
Home » Electronics » Camera & Photo » Video Surveillance » Surveillance Cameras » Hidden Cameras » Review: JMDHKK Anti Spy RF Detector Wireless Bug Detector Signal – Effective at detecting Bluetooth and magnetic signals

Review: JMDHKK Anti Spy RF Detector Wireless Bug Detector Signal – Effective at detecting Bluetooth and magnetic signals

Review of Craftronic’s K18 signal detector for effortless detection of radio and magnetic waves... Read more

Review of JMDHKK Anti Spy RF Detector Wireless Bug Detector Signal

Table of Contents

Test of JMDHKK Anti Spy RF Detector Wireless Bug Detector Signal

3.8/5 - (5218 votes)

Cena: $45.89


  • Highly sensitive to Bluetooth
  • Effective Magnetic detection
  • Useful camera detection feature
  • Rechargeable internal battery
  • Comes with a comprehensive English instruction booklet


  • Struggles with GPS detection
  • Lacks sensitivity with phone interactions
  • Gauss detection needs stronger magnet
  • Camera detection requires manual activation

“From my personal experience using the Craftronic’s signal detector, the device does a commendable job detecting Bluetooth and common magnetic signals, making it a potentially useful tool, especially for someone concerned about hidden devices. However, its inability to detect GPS signals was quite disappointing. Its camera detection feature works reasonably well in poor lighting but requires a direct visual user interaction, which may not always be practical. Overall, while the device has its strengths, it also reveals significant areas for improvements.”

Why trust Shaper Mint Review? Our analysts and reviewers specialists spend their days testing products and analyzing other users’ experiences to help you find a verified unbiased opinion on the product. See how we review


Compatible Devices Smartphone
Power Source Rechargeable Lithium Polymer
Voltage 3.7 Volts (DC)


Today, we’re going to dive into an exciting unboxing and review of a curious little gadget – a signal detector. This device comes from a company called Craftronics and boasts detection capabilities for radio waves, magnetic waves, and even hidden cameras. Say hello to the K18 model! The question is – does it live up to its promise? Let’s find out together.

Debuting the Exceptional Signal Detector

At first glance, the K18’s packaging is fairly inconspicuous. It’s a simple box, no bells and whistles. But don’t let that fool you, what’s inside has the potential to be quite intriguing.

Unboxing the Craftronic’s K18 Model

Upon prying open the not-so-mysterious box, we’re greeted with what appears to be a neat array of parts. The device, tucked securely in a baggie, stares back at us promisingly. Accompanying it are accessories like an antenna, foam padding, the all-important instruction booklet, and a magnetic wand. There’s also a handy little charger ready to power up our new toy.

Designed to be a handheld device, the K18 by Craftronics has LED bars for signal strength indication and buttons neatly aligned on its surface. Interestingly, there’s also a specially coated pass-through glass that aids in seeking out hidden cameras and lenses. Clean sides and a back studded with LEDs complete the look. While it’s no marvel of design ingenuity, it’s got a succinct, efficient feel about it and seems quite user-friendly.

But, first impressions are just that, impressions.

What truly matters is how our signal detector holds up under a series of rigorous tests. Will it excel or crack under the pressure? Let’s delve deeper into this review to find out together.

Analyzing JMDHKK Anti Spy RF Detector Wireless Bug Detector Signal

Getting Started

  • Model K18 signal detector has basic, no-frills packaging
  • Assembly involves connecting antenna and GS probe
  • Device is ready to start detecting signals after assembly

Peeking into the box of the model K18 signal detector was quite an experience. No frills, just the basics.

A Look inside the Package: Unveiling the Device

The first thing that hits you is its plain packaging. Not much fanfare with Craftronic’s K18 , but that’s not why we’re here, is it? We are more interested in function over form.

On opening, I was greeted with a small but compelling set of items. The device itself was neatly packed in a baggie, ensuring damage-free arrival – a thoughtful touch I appreciated. And there were the antenna and foam intact, along with an instruction booklet. Reading, though monotonous, could be quite useful, folks!

The Assembly Process: Connecting the Antenna and GS Probe

Coming to assembly, it was fairly straightforward. The antenna just needed to be screwed on. The GS probe, however, required a bit more finesse. It needed to be lined up so it fits, clicked in, and then committed with the washer. This part had some required fiddling; the whole experience was akin to solving a fun little puzzle. I must say the hard flexible cord of the probe was a pleasant surprise – it conveniently adjusted to the form needed.

The device was now ready to start detecting signals. An exciting sense of anticipation kicked in as I looked forward to the subsequent tests.

Welcome to the world of signal detecting – where setting up is half the fun, learning is integral and the outcome is always a mystery.

Observation of JMDHKK Anti Spy RF Detector Wireless Bug Detector Signal

Initial Impression of Functionality

  • Handheld signal detector is easy to use
  • Device has LED bars to indicate signal strength
  • High sensitivity settings can cause false positives

My first interaction with the signal detector was interesting, to say the least. The handheld gadget felt just right, neither too bulky nor too lightweight. The design was simple, ensuring ease of use without compromising on sleekness.

Turning on the Signal Detector: Does it Work?

Powering on the device was relatively straightforward. I was quite impressed to see the LED bars indicating signal strength and the pass-through glass coated to detect cameras. The sensitivity control at the top knob was a plus – I was able to dictate the signal strength detected and to power the device on. Once I connected the GS probe and screwed on the antenna, the device powered up, ready for use.

Note: The placement of the charging port on the side felt well-thought out, as it did not interfere with anything on the main screen.

Exploring the Sensitivity Settings

The sensitivity setting, variable through the top knob, is quite intuitive. As I increased the setting, the detection became more sensitive. This function could be an excellent feature when trying to catch the faintest of signals. Being able to control sensitivity right off is a feature that I found very helpful, allowing me to customize the device to my requirements.

However, one thing to note is that the device becomes excessively sensitive at the highest setting. In my case, it started randomly picking up signals which can be quite confusing for users, especially beginners. So one needs to be aware that setting the sensitivity too high could lead to many false positives and unnecessary beeping.

Assessment of JMDHKK Anti Spy RF Detector Wireless Bug Detector Signal

Test Run: Detecting via Radio Frequency

  • Craftronics K18 detected Wi-Fi and Bluetooth signals effectively
  • Successful in picking up Bluetooth from various devices
  • Struggled detecting signals from a mobile device

Now that we have explored the initial setup of our device, it was time to put the Craftronics K18 model to the test. The focus for this phase? Detecting via radio frequency. Would it perform as well as expected, or will it fall short of promise? Let’s delve into the details.

A Simple Test: The Phone and the Signal Detector

As a primary step, I decided to use a common, everyday device – my phone. Can our signal detector indeed detect the radio waves from it? Well, let’s see. I turned on a video on my phone and approached the detector to it gradually. Much to my surprise, the detector did not show any drastic change, even as it got very close to a running video on the phone. It did beep a bit, but nothing significant to note.

Detecting Wi-Fi and Bluetooth Signals

Next, I decided to try out detecting Wi-Fi and Bluetooth signals. Now this test gave some interesting results. The detector easily picked up the Wi-Fi router in my vicinity. A moving away distance test confirmed this. It reacted in waves, decreasing in signal strength as the distance increased. What a relief to know that at least one part is working as expected!

Controller, Console, and TV: Testing the Signal Detector’s Versatility

Keen on tirelessly making the most of this test run, I decided to examine a bit more. So next up were a wireless game controller, a gaming console and a TV. Upon approaching the wireless controller to the detector, it reacted immediately. From this, and the subsequent tests on the gaming console and TV, it emerged clearly that our signal detector is an ace when it comes to picking up Bluetooth signals.

Bluetooth Signals: Checking Apple AirPods and Laptop

Now, since it was established that the device has a knack for detecting Bluetooth signals, I threw open the Apple AirPods to it. Just as predicted, the device again responded immediately, and strongly too, much to my pleasure. The detector, however, seemed less reactive towards Wi-Fi, as observed when the Wi-Fi was turned on in my laptop.

Overall, the signal detector does a commendable job of picking up Bluetooth signals, but seems a bit lackluster in picking up signals from a mobile device. Not completely disappointing I’d say, but there is definitely room for improvement.

Scanning JMDHKK Anti Spy RF Detector Wireless Bug Detector Signal

Experimenting on Bluetooth Detection

  • Excellent at detecting Bluetooth signals
  • Lacks distinct WiFi and Bluetooth signal discernment
  • Moderate Gauss detection with room for improvement

In the heart of this review, we dive into the intricacies associated with detecting Bluetooth signals. The experimentation focused on understanding how efficiently the detector responds to Bluetooth signals and its subsequent usage.

The Easy Detection of Bluetooth Signals

I started off by testing the Craftronic’s detector with my phone’s Bluetooth turned on. Subsequently, I adjusted the detector’s knob to increase its sensitivity. As the sensitivity increased to an optimal level, quite immediately, the detector reacted to the signals. A slight discrepancy, however, was noticed as it didn’t differentiate between WiFi and Bluetooth signals—creating a bit of perplexity amidst the testing process.

Switching Sensing Method to Gauss: A Look at Magnetic Detection

After a fair bit of experimenting with the Bluetooth detection, I changed the detection method to Gauss to see how it would sense magnetic signals. The whole process is quite user-friendly — all you need to do is hold down the M-button until the detector switches to Gauss detection mode.

While the detector maximized the detection of Bluetooth signals, its efficiency reduced visibly when switched to the Gauss detection mode. Though it was still capable of detecting substantial magnetism, it wasn’t as polished or efficient as the Bluetooth detection.

Pros: Excellent for detecting Bluetooth signals. Easy to use and adjust sensitivity.

Cons: Inability to distinctly discern between WiFi and Bluetooth signals. Even though Gauss detection works, it may need fine-tuning to be as precise as the Bluetooth detection.

Takeaway: While there is room for improvement in the Gauss detection, the device proves highly efficient in detecting Bluetooth signals.

Appraisal of JMDHKK Anti Spy RF Detector Wireless Bug Detector Signal

Trying Gauss Detection Around the House

  • Gauss detection successfully identifies household magnetic devices
  • Failed to detect magnetic field of GPS module
  • Ability to detect subtle magnetic signals is questionable

Next on the list was to test the Gauss detection, a feature designed to detect anything magnetic. To reiterate, switching to Gauss detection means using a different sensor, and the aim was to evaluate this feature’s functionality within a typical household setup.

Sensing for Security System and Speakers

Household experimentation started with the security system, primarily considering its magnetic foundations. To no surprise, the signal detector effortlessly picked up on it. You could see a little light flicker on the gadget, which was quite satisfying to observe. This suggests that it can be used to locate hidden and obscure devices equipped with magnetic properties.

Intrigued by the previous result, the next logical step was to test it on more commonly found magnet-based devices. In this case, household speakers were an ideal choice. Swing the detector near the speaker, and you hit the jackpot right there. Be it a sound bar or any other speaker type; the device seemed pretty adept at identifying anything that bore the power of magnetism.

Impotence of Detection on GPS: A Minus Point?

Optimistic with the initial results, the testing extended to a car equipped with a GPS module. Unfortunately, while expected to have a strong magnetic field, the detector showed no sign of identifying it. Even after switching the detector setting back to radio frequency, it failed to respond to the GPS. It’s essential to note that it was assured that the GPS was ‘On’, and thus, the detector’s impotence in this instance raised some questions about its sensitivity levels and effectiveness in real-world scenarios.

Conclusion with the Gauss Detection

Zoning out of this, it seems that the Gauss detection feature excels in identifying household devices that carry magnetic elements. It scored pretty well in establishing its functionality in this area; however, the GPS detection failure was indeed a bit of a setback. Further exploration and testing are needed on more GPS and similar devices to substantiate this review. As it stands, larger magnetic fields appear to be easily detected whereas the ability to detect more subtle magnetic signals remains questionable.

Unveiling the Camera Detection Feature

  • Craftronic RF Detector swiftly detects hidden cameras.
  • Feature activated by button, illuminates LEDs.
  • Performance varies with lighting conditions.

One of the remarkable features of this Craftronic RF Detector I’d like to highlight is its capacity to detect hidden cameras. It’s quite a distinct aspect, which can make this device an appealing choice for those that value their privacy or suspect covert surveillance.

Activating the Feature: How to Use It

Activating this feature is pretty straightforward. There’s a button on the back that illuminates LEDs when pressed; it’s one of the components that makes this surveillance reconnaissance feasible. You’ll observe that pressing this button not only prompts these illuminators to light up, but with a prolonged press, they start to blinking. This adjustable blinking speed can potentially enhance your capability to spot concealed cameras.

A Close Look at Camera Device Detection

  • Webcams: Moving on with the testing, I pointed the gadget towards a webcam on a computer monitor, and it almost instantly stood out, implying that the feature does work.
  • Point and Shoot Cameras: I followed up this test by pointing it at a traditional point-and-shoot camera. A similar outcome was observed. Both the lens and a side sensor on the camera were detectably conspicuous on the device’s display.
  • Lighting conditions: To ensure I covered all bases, I decided to use this feature under different lighting conditions. After some experimentation, it became apparent that low-light environments are much more conducive for using this particular feature.

To sum it up, this camera detection feature works remarkably well, making it possible to identify the presence of hidden cameras quickly and efficiently. However, remember that its performance might fluctuate based on the surrounding conditions, particularly lighting. In terms of user experience, caution is advised to ensure the effective use of this feature.

Charging and Summarizing the Experience

  • Craftronic’s Signal Detector highly sensitive to Bluetooth
  • GPS detection somewhat unreliable
  • Handheld-friendly structure, good travel companion

Charging the Craftronic’s Signal Detector

After extensive testing and tinkering, the Signal Detector by Craftronics needed a recharge. A red light indicator appeared on the device signaling the need for a boost. I plugged it in and noticed the red light persisted, perhaps indicating that the device was still in the charging process. I suspect it will either turn green or turn off once fully charged. What I liked was the fact that the device features an internal battery that’s rechargeable. Not needing to fuss around with buying and replacing batteries is a definite plus in my book.

Summarizing the Experience with the Craftronic’s signal detector

The greatest takeaway from using Craftronic’s K18 Signal Detector is its sensitivity towards Bluetooth signals . This device could be your detective for locating all things Bluetooth in your surroundings. Along with Bluetooth, the ability for the device to detect anything magnetic was impressive as well.

On the other hand, my confidence was a little lost when it was unable to detect a GPS unit . I played around, testing it with the GPS module available but got no response. It could be user error, or simply a shortcoming of this particular model.

The camera detection feature was both interesting, yet had room for improvement. While the LED lights work well in pointing out camera lenses, the hunt for hidden cameras was user-reliant rather than device reliant. Ideally, this is a feature that would benefit from being more automated.

Finally, a strong point worth mentioning is its compact and handheld-friendly structure. The device could be a great travel companion especially if one has safety concerns while on the road.

The features, sensitivity to Bluetooth and the overall ease of use make the Craftronic’s K18 Signal Detector a product worth considering. There’s certainly potential for fine-tuning, especially when it comes to GPS detection.

Thus, in the end, whether the balance of useful features outweighs the few areas of improvement, is truly down to the unique needs of each individual user. For Bluetooth sleuthing and magnetic hunting, however, this could be your gadget of choice.


Throughout my journey with the Craftronic’s RF Detector, I have seen how effective it can be, but also some areas where it falls short. Let’s go over my key takeaways.

Pros and Cons

  • Bluetooth Detection: This device shines in terms of picking up Bluetooth signals. The sensitivity and accuracy with Bluetooth were truly impressive. It successfully detected various devices ranging from AirPods to gaming controllers to laptops. That, in itself, is a significant plus for many users.
  • Magnetic Detection: It’s definitely a bonus feature. From the security system to speakers around the house, the device was successful at picking up signals in most scenarios.
  • Camera Detection Feature: An innovative feature, designed to help find hidden cameras. It takes some practice to understand and use correctly, but when mastered, it can be a helpful tool.
  • GPS Detection: This is where the device fell a bit short. Despite our efforts, it failed to pick up a GPS module in a rear-view mirror, which was a bit frustrating. However, this might have been down to user error or specific circumstances.

Final Verdict

In conclusion, the Craftronic’s RF Detector stands out as a tool that offers real value. The device carries a unique combination of feature sets that can be incredibly useful tracking Bluetooth and magnetic waves.

However, each user must understand the functionality of the product and how to use it correctly. The manual and product guides could be improved to make this learning process quicker and easier, especially for the GPS detection feature.

Thus, if you’re interested in these sorts of devices, this could be a solid choice but keep in mind the limitations noted in this review. I’m signing off impartial and unaffiliated, aiming to provide as much unbiased information as possible. I hope this comprehensive review of the Craftronic’s RF Detector has been helpful.

Should you buy the JMDHKK Anti Spy RF Detector Wireless Bug Detector Signal?

Buy it if…

You are cautious about Bluetooth devices

The device is extremely sensitive and efficient in detecting bluetooth signals, making it perfect for those needing to locate hidden bluetooth devices.

You need to check for magnetic fields

The detector exhibits an impressive ability to pick up magnetic fields. This can be useful in various situations like detecting magnetic parts in security systems or speakers.

You’re concerned about hidden cameras

This detector has a specific feature which allows you to easily identify hidden cameras by noticing the reflective lens in the darkness.

Don’t buy it if…

You need GPS detection

Although it’s supposed to detect GPS signals, the device showed no detection in the review. It might not work if GPS tracking is your primary concern.

You’re looking for automatic camera detection

While it helps in finding hidden cameras, the process is manual. You have to look through the specially coated glass yourself to identify the cameras.

You’re not comfortable with complex tech gadgets

The device requires assembling and has multiple settings to adjust. It also switches between two detection modes, making it a bit complex for non-tech-savvy individuals.


Does the Craftronics RF Detector come with an antenna and GS Probe?
Yes, the antenna and GS probe come with the Craftronics RF Detector package.
What can I detect using the Craftronics RF Detector?
The detector can identify radio waves, magnetic waves, Bluetooth signals and hidden cameras.
How do I control sensitivity on the Craftronics RF Detector?
Sensitivity can be adjusted on the detector by twisting the knob on the top of the device.
Can the Craftronics RF Detector detect signals from my phone?
Phone detection in the standard test conducted during the review did not give strong results. The detector could sense some signals but did not react strongly.
How does the Craftronics RF Detector perform with Bluetooth detection?
The detector shows high sensitivity and effectiveness at detecting Bluetooth signals. It performed well while sensing signals from Apple AirPods and a laptop.
Can the Craftronics RF Detector detect magnetic fields?
Yes. The device was able to successfully detect magnetic fields emanating from a security system and speakers.
Why was the Craftronics RF Detector unable to detect GPS during the experiment?
The inability to detect GPS could have been due to user error. More investigation and tests would be needed to confirm the device’s capability.
How does the camera detection feature on the Craftronics RF Detector work?
The camera detection feature works by reflecting the lens of a camera when the LEDs in the back are activated. This reflection is more noticeable when observed through the pass-through glass in low light conditions.
What is the charging mechanism of the Craftronics RF Detector?
The Detector comes with an internal battery that can be recharged. A small light indicates when the device is being charged, and turns off or turns green when the battery is full.
Is the Craftronics RF Detector worth buying?
Despite its inability to detect GPS effectively, the Craftronics RF Detector is versatile and is quite adept at detecting Bluetooth signals and magnetic fields. It can be a useful tool under specific circumstances.

About Rachel Zimmerman

Rachel ZimmermanRachel's background in both the arts and sciences ensures that her reviews are well-researched, creative, and approachable for readers across the spectrum.

Leave a Reply

Your email address will not be published. Required fields are marked *