JMDHKK K18+ Hidden Camera Detector, Spy Camera Finder, Bug Detector, Magnetic Field Detector, Listening Device Detector – Portable Privacy Protection Tool for Home, Office, Hotel, and Travel Security

The JMDHKK K18+ is a game-changer! It’s compact, easy to use, and detects hidden cameras, bugs, and GPS trackers with precision. The RF signal and infrared lens detection work flawlessly, giving me peace of mind wherever I go. Great value for the price—highly recommend!

Works great! Solid design. Took a few minutes to calibrate it but then was very easy to use.

Instead of the omnidirectional narrowband antenna that comes with the device - which picks up signals the best around 2GHz or thereabouts (guesstimate) - I purchased a cheap Logarithmic Periodic wideband antenna to attach with a short adapter cable. I had to solder the connector that came with the antenna onto the PCB, but overall the performance now is of a much higher quality and sensitivity than with the antenna that comes with the unit. I can now detect strongly the roughly 880MHz signal coming from the smart meters that are acting as data uplinks, the (poss.) cellular signal booster and wifi router that our neighbor has beaming into our office, through the wall and bouncing down off the roof (extremely strong signal, which is worrying).The sensitivity and expanded detection range has allowed me to perform surveys of radiofrequency hot zones along highly populated tourist areas, where extremely strong Line of Sight and reflected signals come from cell towers (microcells on highrise buildings, small micro/picocell poles, microcells on police department buildings, large macrocell towers... and many more sources)Overall, with the reduced price, and with the upgraded capability, I am now happy with the performance of the product. The manufacturer should really think about adding an alternate model that comes with a wideband directional antenna in a non-conductive plastic housing with a grip to point it at things.

Never worked correctly. Would not pickup devices unless you were directly on top of the device! If you turned up the sensitivity then you got way too many false positives alerts. Save your money and get something better. Exactly what that would be, I don't know.

Great, seems to work fine, but only charges with a USB-A to USB-C cable. My cable that charges literally everything else in my life won’t work. Very, very frustrating.

The media could not be loaded. picked up this detector for checking my hotel rooms during business trips and its straightforward to use. two button operation makes it easy to figure out - no complicated settings to mess with. the led lights show signal strength and the vibrate feature is handy when you need to be quiet. been using it for about a month now in different places and its simple enough that i can do a quick scan in just a few minutes. battery life is decent - still using the first set after checking six different rooms. few things to note though - sometimes picks up regular electronics like wifi routers which can be confusing at first, and the magnetic detector needs to be pretty close to work well. size is good for travel - fits in my laptop bag without taking up much space. like that you can turn the beeping sound off and just use vibrate mode. takes some practice to learn what normal signals look like versus unusual ones. wish the instruction manual was clearer about what different light patterns mean. comes in handy when staying in new places or using shared spaces. makes checking unfamiliar rooms quick and simple. nice having something compact that does multiple detection types without needing separate devices.​​​​​​​​​​​​​​​​

Purchased and used in VRBO home but it never really detected anything. Tried it at home where I have wireless cameras but was hit and miss in detecting them

The media could not be loaded. Everything was in new condition and was easy to use. I was alarmed that it went off multiple times at the hotel that I’m staying in.The TV set it off which is likely a false positive. And 2 separate spots in the bathroom mirrors also triggered the detector.I’m not able to see behind the bathroom mirror to verify if it’s accurate but I read that fluorescent lights can interfere with some cameras and bug detectors.I wish there was more information about false positives in the manual. I will be doing more research on this prior to contacting the authorities!