20%
21%
20%
25%
19%
21%
25%
22%
25,5%
20%
19%
24%
27%
23%
22%
21%
21%
17%
18%
20%
21%
23%
23%
21%
23%
22%
21%
25%
Order until 13:00 CET and we will ship today! One-day delivery across EU and UK
Order until 13:00 CET and we will ship today! One-day delivery across EU and UK
This is one of the most common questions we get about our jammer range and the answer depends on what kind of spy tool you actually mean.
Our range is perfectly legal to own and use to protect your own conversations. This guide helps you understand the law behind it, how the legal devices work, and which professional counter surveillance equipment you can buy today to stop unauthorized recordings.
The word "jammer" covers devices that are completely banned and devices that are perfectly legal, here is the explanation:
So it means that if it radiates radio energy and degrades licensed networks, it is restricted. If it protects a conversation acoustically, it is generally permitted. The EU simply writes that principle into its own law.
Owning the device is one question but keep in mind the context you use it in is another, governed by national privacy and recording rules. These jammers are built for stopping other people from secretly recording your private conversations.
If you want a simple recommendation, these two cover the most common needs for full rooms, and a discreet, affordable unit for a fixed space. Both are part of our Counter-Surveillance range.
Here are four more units covering portability, compact desks, directional defence and mobile executive use.
The fastest way to narrow six devices to two or three is to decide whether you are protecting one room you control or conversations that move with you.
A company runs confidential strategy talks in the same boardroom weekly and suspects leaks. The room is theirs and stays put so the answer is permanent protection.
A director negotiates across Europe and cannot control the rooms they sit in. Protection has to be portable, discreet and quick to deploy.
Are ultrasonic microphone jammers legal in the EU?
Yes. They are acoustic devices and they emit sound, not radio. They are sold and used lawfully across most of Europe for defensive privacy. How and where you use one is still governed by national recording and privacy law.
What is the difference between an ultrasonic jammer and a signal (RF) jammer?
An RF jammer transmits radio energy to block mobile, GPS or Wi-Fi that is illegal across the EU because it causes harmful interference. An ultrasonic microphone jammer transmits inaudible sound that only disrupts nearby microphones; it touches no radio spectrum and leaves phones, GPS and networks working normally.
Do these devices block phone calls or mobile signal?
No. They do not affect any radio signal, so phones, Wi-Fi and GPS keep working. They only stop a nearby microphone inside phones from making a usable recording of speech which is exactly why they are legal where RF jammers are not.
Are they safe for people?
Used as directed, yes. The output is above the range of human hearing and is not considered harmful in normal use. Follow the manufacturer's recommended operating times and breaks, as with any device.
What can they block?
Because the effect targets the microphone itself, it works against smartphone voice apps, digital dictaphones, professional recorders and the microphones inside hidden cameras. Effectiveness varies with distance, angle and room conditions, so coverage and placement matter.
Can people in the room still talk normally?
Yes. The interference exists only inside microphones, not in the air your ears hear. Conversations continue without any audible buzzing which is the key advantage over audible white-noise generators.
Every device here is a professional ultrasonic microphone jammer manufactured by Selcom Security and stocked within the EU. Our wider Counter-Surveillance equipment also includes RF and camera detectors, white-noise generators and full TSCM sweep equipment, so you can build protection in layers. All with free DHL Express delivery and a 24-month warranty.
