Jammers with Less Than 40 Meters Jamming Range

Less than 40 meters jamming range jammers are built for users who require wider coverage and enhanced signal suppression compared to compact, 5M & 10M short-range jammer devices. With a maximum effective range of up to 40 meters, these models deliver noticeably higher output power and improved stability.

Desktop Systems and Custom Portable Options

Most products in this category are desktop-style jammers, designed for continuous operation and easy placement. In addition, some custom high-power portable models are available for users who need mobility without sacrificing range.

Browse this section to find high-stability, medium-range jamming solutions that combine power, control, and reliability for professional indoor use.

At TheJammerBlocker, this category is commonly chosen for environments where small portable jammers are no longer sufficient, but full-scale systems are unnecessary. Their coverage is broad enough to protect the entire medium-sized space without excessive spillover.

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Showing all 36 results

-36%
Special Price Customizable 18W 10-Antennas Stationary Signal Jammer (40M)
Thanks to the built-in 3 cooling main fans and convection vents, this special desktop jammer can efficiently interfere with a variety of communication signals (the interference frequency can also be customized), including CDMA, GSM, 3G, 4G, WiFi, Bluetooth, GPS, LoJack and other frequency bands, and can effectively shield surrounding mobile phones, Wi-Fi, satellite positioning and other wireless signals. Its shielding range can reach 40M.
Original price was: 779.99$.Current price is: 499.99$.
-29%
T-US-A40 Mobile Communication Signal Jammer for SAT (40M)
The stationary cell phone signal jammer “T-US-A40” is one of the few products in the budget class that can interfere not only with the frequencies of current mobile communication standards, but also with the frequencies of Wi-Fi networks.
Original price was: 447.99$.Current price is: 319.99$.
-37%
T-US-B59 – Desktop 6-Band UHF Remote Control Jammer (40M Range, AC Powered)
The T-US-B59 is a professional-grade UHF car remote control jammer designed for fixed indoor deployment. It uses 6 high-gain antennas to block common vehicle remote control frequencies (315, 330, 390, 418, and 433 MHz), effectively disabling wireless key fobs, remote starts, and garage door openers within a 40-meter range.
Original price was: 748.99$.Current price is: 472.99$.
-45%
T-US-P5 Vehicle-mounted Desktop Jammer with Adjustable Power (5 Bands)
Unlike the old desktop GSM blocker device with 5 antennas, the T-US-P5 has been upgraded to a new version with an adjustable button to make the jammer easier to use, the maximum suppression distance can reach 40M. if you want to use this desktop signal blocker in a car, just use the car charger and connect it to the car.
Original price was: 668.99$.Current price is: 366.99$.
-33%
T-US-012-2 Desktop 12 bands Cell Phone Signal Scrambler
This 12 bands signal jammer can block almost all common signal types. Each antenna is detachable and supports a 90-degree folding design, which allows flexible adjustment of the antenna angle and layout according to different scenarios to ensure maximum signal interference effect.
Original price was: 1,216.35$.Current price is: 818.69$.
T-US-07 – Plug-and-Play Wall-Mount or Desktop Phone Jammer Device (5-30m Range)
Unlike conventional jammers, the T-US-07 Cell Phone Jammer combines directional high-gain antennas, plug-and-play simplicity, and infrared remote operation—delivering efficient coverage without unnecessary complexity.
799.25$
T-US-08-7 Desktop Home Cell Phone and WiFi Jammer
It has three relatively large cooling fans at the bottom, which is the most important “heat dissipation place”, so the wireless network jammers can provide you with interference work uninterruptedly. It also has the ability to interfere with mobile phone signals, that is, the 2G (GSM/DCS), 3G and 4G mobile networks commonly used in our daily life.
569.79$
-36%
T-US-JC6 | Desktop 6-Antennas 4G Jammer (15W) – Fixed Signal Isolator for Cell Networks
Unlike ordinary portable jammers, the T-US-JC6 is designed for long-term operation in offices, meeting rooms, examination halls, or restricted areas that require controlled communication zones. With six independently tuned antennas, this unit effectively blocks a wide spectrum of mobile communication signals — from early 2G CDMA and GSM bands to modern 3G and 4G LTE/WiMAX networks.
Original price was: 769.99$.Current price is: 489.99$.
-34%
P-US-08 – 8 Bands portable GSM Cell Phone Jammer
Introducing the top-selling cost-effective cell signal jammer, revered for its unmatched performance and sleek black design. This powerhouse portable jammer device is engineered to flawlessly intercept a wide array of signals, saying goodbye to unwanted intrusions.
Original price was: 499.69$.Current price is: 329.99$.
-22%
T-US-W3 Desktop 3 bands WiFi Blocker (9W)
Special offer for T-US-W3 desktop WiFi jammers! With an output power of up to 9 watts, it can effectively block all devices running on WiFi band signals (such as monitoring devices, pinhole cameras, 4k HD video transmission, and drone control, etc.). The recommended wall mounting height is 0.8 to 1.8 meters.
Original price was: 499.50$.Current price is: 389.20$.
T-US-022 – 22 Antennas Stationary all in one Jamming Device (45W)
Introducing this formidable stationary 5G Cell Phone jamming device boasts a full-band signal blocking capability, emitting a spectrum of white noise to suppress a wide array of electronic communication devices in the market.
1,178.09$
-30%
T-US-F8B Multi-Band Signal Jammer | 18W Desktop & Vehicle Use | 40M Range
Unlike standard desktop jammers, the T-US-F8B combines desktop stability with mobile flexibility-supporting both AC mains power and a vehicle cigarette lighter adapter for on-the-move deployment.
Original price was: 559.99$.Current price is: 393.99$.
P-US-08-1 – 8-Band Signal Jammer for 4G Wifi GPS RC
Discover a revolutionary 8 bands carryable mobile signal scrambler designed for the modern age. Featuring omnidirectional antennas and independent frequency band switching, this hot-selling cell jammer product delivers powerful signal jamming capabilities.
428.29$
P-US-016-3 16 Bands Frequency Jammer
The biggest advantage of this GPS signal jamming device for car is its innovative integration of similar frequencies, allowing a single channel to block multiple frequencies. This design not only fully utilizes the effectiveness of each channel, but also maximizes its functionality. Whether it is GPS signals, drone communications or wireless cameras, they can all be effectively blocked, providing you with unprecedented protection and convenience.
986.27$
P-US-010-5 – Professional 5G Mobile phone Blocker (10w)
Unlike pocket-sized jammers with short runtime and limited coverage, the P-US-010-5 Handheld Mobile Signal Blocker is built for continuous operation, extended range (up to 30m), and multi-band flexibility-making it ideal for mission-critical environments.
735.69$
-38%
P-US-03-3 – 3 Antennas Portable WiFi Camera Jammer (6w)
Introducing our Superior WiFi Camera Blocker, the fool-proof ultimate solution to keep your signals secure and interference-free! With 3 high-performance antennas and effectively block All 2.4GHz &5GHz wireless signals with ease…
Original price was: 719.99$.Current price is: 449.98$.
-38%
T-US-08-5 – Powerful Indoor 5G Cell Phone, Wi-Fi & GPS Jammer (40W)
T-US-08-5 is a compact indoor 5G jammer built for real-world privacy: it covers 8 common bands (from GSM to 5G and Wi-Fi), delivers up to 40 W total (≈5 W per channel) and creates an adjustable no-signal zone from 5 to 40 meters.
Original price was: 1,169.99$.Current price is: 729.99$.
T-US-08 – 8 antennas desktop 5G Mobile Phone Jamming Device
The 8 bands mobile phone jamming device can effectively jam 2G 3G 4G cell phone signals, and can also block GPS, WiFi and other frequencies. It has eight working antennas, so it can simultaneously stop eight different frequency bands at a distance of up to 40 meters. You can set the parameters manually – or turn it off if you don’t want to interfere with any signals.
539.98$
P-US-010 – 10 bands Handheld Mobile Phone Jammer
Exciting new arrival! Our cutting-edge cell phone blocker is packed with powerful functions and features to deliver comprehensive communication protection. With a sophisticated 10-antenna design, this device adeptly disrupts GSM/CDMA/3G/4G mobile phone signals while also interference with GPSL1, WIFI 2.4G & 5.2G, Lojack, Remote Control, and more, ensuring your communication remains secure.
475.32$
T-US-06-6 Stationary CDMA GSM Jammer – Indoor Signal Blocker for Conference Rooms
The T-US-06-6 Stationary Jammer is a high-performance indoor device designed to block up to six major frequency bands at once – from CDMA and GSM to 4G LTE, WiFi, and beyond. With its 15W output power and 30-meter effective range, this desktop jammer is ideal for conference rooms, offices, or any secure indoor space where privacy and focus matter.
349.99$
P-US-08-5 – Portable 8 antennas WiFi Bluetooth Jammer (25W)
This Wifi blocker rejects radio communications from the source, uses broadband scanning technology, can scramble Bluetooth or old and new mobile phone signals, and can prevent location information from being displayed to others. The device exhibits characteristics such as searching the network, no signal, and no service system, providing users with safe and reliable information protection.
356.63$
P-US-012-4 – 12 Bands 5G Mobile Phone Blocker (37W)
This mobile cell scrambler is not only superior in strength, but also the preferred communication security tool for professionals and ordinary users. Buy once and protect your communication privacy for life. You’ll be captivated by its functionality and design.
785.25$
-19%
P-US-010-4 – GSM, 2G, 3G, 4G, 5G, GPS Jammer & 433Mhz 868Mhz Blocker
This 5G network blocker specializes in interfering and intercepting 5G and various full-band Internet, and mobile network signals. What sets this mobile signal jamming device apart is its individual control for each of the 10 frequency bands, allowing users to toggle them on or off as needed.
Original price was: 679.99$.Current price is: 548.98$.
T-US-08-1 – 8 bands Desktop GSM, 2G, 3G, 4G, WiFi 2.4GHz, GPS & Lojack Jammer
The Silver Fixed Signal blocking device is equipped with eight antennas, which can effectively output interference capabilities up to 40 meters, effectively isolate target signals and ensure indoor communication security.
473.56$
T-US-016 – 16 antennas desktop all in one Blocker
In contrast to typical signal jammers, this stationary signal jamming equipment can target 16 kinds of signals, including less common yet widely used Radio frequencies…
1,179.36$
P-US-012-2 – Portable 12-Channel 5G Cellular Blocker & A-GPS Jammer
Unlike basic jammers that only cover 2G, 3G, and 4G, this Portable 5G Cell Phone Jammer device extends its reach to 5G mobile networks, GPS trackers, Lojack, and remote-control signals — making it a versatile solution for security and counter-surveillance.
653.69$
T-US-014 – 14-Band Stationary Mobile Phone Jamming Device
This ingenious mobile phone jamming device has an extraordinary ability to jam signals across a range of frequencies. The Cell Phone Jammer offers adaptable power settings, allowing it to effectively block cell phone and other communications signals within a 40 meter radius.
1,039.69$
-8%
T-US-016-2 – Stationary Powerful all in one 5G Jammer
Considering using the world leading stationary powerful 5G jammer to create a comfortable private space, without any disturbing from others or devices around.
Original price was: 1,299.00$.Current price is: 1,199.00$.
T-US-NZ10 – Desktop 10-Channel Smartphone and WiFi Blocker
Want a distraction-free meeting environment? Or want to ensure that students can’t search for answers online during exams? The smartphone jammers can do it with one click! Equipped with a 10-channel built-in omnidirectional antenna plus an original IC chip and integrated circuit, it can fully and stably block all mobile phone and WiFi signal within a range of 5-40 meters.
497.78$
-26%
T-US-X03 – Full-Band WiFi & Bluetooth Jammer (Compact Desktop Model)
The T-US-X03 desktop jammer delivers full-band interference against 2.4GHz & 5GHz WiFi and Bluetooth signals, cutting off hidden cameras, wireless microphones, routers, and even Bluetooth gadgets within a 30-meter radius.
Original price was: 499.99$.Current price is: 368.99$.
T-US-X12 – All-in-One Desktop Jamming Device
During secret negotiations, it is particularly important to monitor the surrounding radio frequencies in all directions. The cell phone signal suppressor is designed to meet such challenges. It covers all frequency bands from 2G to 5G (including NSA and SA) and WiFi. Whether it is voice calls or data transmission, it can be blocked within the range of 5-40 (the best effect is 200 meters away from the base station).
849.78$
-41%
T-US-X6 Stationary UHF VHF Bomb Signal Jammer (Multiple Versions Customizable)
Compared with T-US-06-1, Stationary frequency jamming device T-US-X6 not only inherits the high performance and reliability of the former, but also achieves significant improvement in flexibility, It stands out from similar products with its flexible independent adjustable power switch and multi-scenario customization function.
Rated 4.50 out of 5
(2)
Original price was: 709.99$.Current price is: 419.99$.
T-US-06-1 GPS Scrambling Device for Cars
The verified gps blocking device, designed much like a Wi-Fi router but with the purpose of blocking signals, emerges as a pivotal tool in such environments. This powerful tracker jamming device, ideal for fixed indoor locations, and explore how it maintains a controlled signal-free zone.
512.18$
T-US-06-5 2.4 GHZ 5.8 GHZ WiFi Signal Blocker
This bluetooth signal scrambler allows you to simultaneously interfere with full-band WIFI signals and prevent all locators, trackers, navigators, and UHF/VHF signals operating on the GPS L1 frequency from being blocked. If the drone is operating using 2.4GHz, then it will also be forced to land. With this wireless blockers you can intercept the signal you want to abandon within a range of 20 – 40 meters.
468.19$
P-US-016-5 Portable 16-Band Wireless Network Jammer multipurpose 5G Mobile Signal Blocker
One of the most innovative features of the P-US-016-5 is its independent DIP-switch band control. Each band operates separately, allowing you to instantly decide which signals within a 10-30 meter radius remain active or blocked. Compared with the portable 16-antenna jammer P-US-016-1, this upgraded outdoor jammer model delivers stronger output power, a wider coverage zone, and higher-gain antennas that significantly boost interference efficiency.
841.99$
T-US-016-4 Stationary Cell Network Jammer
This is a technologically advanced fixed cell blocking device capable of interfering with the latest 5G technology signals. It covers almost all types of mobile networks, 5GHZ frequency bands and satellite signals.
1,792.68$