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8 Antennas Indoor Adjustable 25M UHF VHF WiFi Mobile Phone Signal Jammer EST-505J

SKU: #001 - In Stock

  • airport Shipping:  International shipping available
  • delivery_food Shipping time:   Standar(10-20 business days), Rush(5-10 business days)
  • chip Discount:  Get 2% discount on orders of USD $100.00,Get 3% discount on orders of USD $200.00
  • compass Handling time:  Ships within 3 business days after receiving cleared payment
  • available_updates Returns:  7 days money back guaratee,buyer pays return shipping

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EST-505J adopted with the latest technology, with 8 omnidirectional custom-able bands, is able to widely cover mobile phone signal frequency and Walkie-talkie signal frequency such as, GSM/CDMA/AMPS/DCS/PHS/3G(WCDMA TD-SCDMA & CDMA2000)/VHF/UHF etc., within 1-25 meters radius. EST-505J can be installed on wall easily, creating a shielding area to avoid information leaking and hacking activities. While blocking the mobile phone and Walkie-talkie signal but have no affect on other electronic devices, harmless to human body. For organization and personnel who require information security and high confidentiality, or places where mobile phone using is prohibited.



Frequency Bands Output Port Frequency Range
Band 1 CDMA 869-894MHz
Band 2 GSM 925-960MHz
Band 3 DCS/PHS 1805-1920MHz
Band 4 TD-CDMA 2005-2035MHz
Band 5 CDMA2000/WCDMA 2110-2170MHz
Band 6 WiFi(2.4G) 2400-2485MHz
Band 7 UHF 400-470MHz
Band 8 VHF 135–175MHz

-Power Supply: AC110V-240V DC 5V 12A

-Dimension: 240mm(L)×210mm(W)×51mm(H)

-Weight: 2.5 KG

-Working Temperature: -10 to –55℃

-Relative Humidity: ≤90%(RH)

-Air Pressure: 86-106kPa

-Jamming Range: 1-25 meters (still depends on the signal strentgth in the given area)

-Antenna: 8 Omnidirectional Antennas

-Colour: Silver



(1) 8 omnidirectional antennas, is able to widely block the mobile phone signal.

(2) Adjustable knob allows you to control the jammer efficiency or block the specific frequency.

(3) Well-performance cooling system, with effective heat dissipation aluminum plate.


Operation instruction

(1) Open the package and take out the devices

(2) Install the antennas to the right position, by following the number labels.

(3) Connect with electricity through AC adapter, then switch on the power button. If the indicator lights on, the jammer is working.

(4) When installing the jammer on wall, please do not point the machine to the base station, to avoid disturbing.

(5) When the jammer working, the temperature on the surface will turn to about 50 degree, please do not put any combustible near the jammer.

(6) Please avoid electromagnetic and heat sources to maintain the maximum efficiency and ensure the stable longtime operation.

(7) While using outside, please avoid water and damp.

(8) After using, please turn off the jammer for normal usage of mobile phone.



(1) EST-505J needs no special maintenance

(2) Please avoid caustic gases and liquids, make sure the jammer is dust-proof and moisture-proof to prevent the aging of the inside components be accelerated.

(3) For storage, please contain the jammer in dry and ventilated places, to avoid salty mist and noxious gases.

(4) The warranty period is 12 months. This product is charged for three years (repaired free), and maintained for life. Only need the buyer to bear the shipment fee.


Application situation

Hotel, home, school, jail, conference room, residential zone, military base, government building, VIP room, etc. Places where high confidentiality and information protection is required, or mobile phone using is prohibited.


Packing list

(1) EST-505J main unit  1pc

(2) Antennas          1set (8 antennas)

(3) AC adapter         1pc

(4) User manual (optional)   1pc

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