• Please contact us for more discounts

  • Discount code (please send email for inquiry)

  • Promotion Time (Coming soon!)

  • day ::

This product was successfully added to cart!

View Shopping Cart

8 Antennas 16W 40m Blocking GSM DCS 3G Remote Control 315 433 Walkie Talkie VHF UHF Jammer EST-502F8

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

Product Detail

Customer Reviews

Shipping Guide

Delivery Time

Product Tags

1. Introduction

This walkie talkie VHF UHF jammer EST-502F8, a multi use and powerful desktop jammer, with 8 channels all-in-one full blocking for all the mobile phone CDMA, GSM, DCS, PCS, 3G / UMTS, 4G / 4G LTE / 4G WiMAX and walkie talkie VHF UHF, under all types of Android phones, Tablets, Smart Phones, iPhones, also available for optional blocking GPS LOJACK, RF 315MHz 433MHz 868MHz 915MHz, VHF UHF Walkie-Talkie & Wireless Headset / Microphone signals and etc. Its single channel power adjustable according to the using environment, to fit for the different request of customers. It is specialized to coverage mobile phone frequencies used in most parts of the worldwide as United States of America, Europe, Asia, Australia, Middle East and Africa. Creating a range of up to 60 meters in "forbidden" zone for all mobile, Wi-Fi to provide you with complete coverage, giving you the privacy, security and peace of mind that you need. Included vehicle power supply allows flexibility for you to take the unit with you and use it while mobile prevent "leakage" of important information along the way saving you from intrusive phone calls, which is great for school classroom to avoid exam cheat and oil / gas station to keep in secure.

2. Technology

* available TX frequency, or can be customized

1st Channel: 850-965MHz (CDMA800 / RF868 / GSM900 / RF915 / LORA)

2nd Channel: 1805-1995MHz (DCS1800 / PCS1900)

3rd Channel: 2110-2170MHz (3G 2100)

4th Channel: 700-830MHz (4G LTE 700+800)

5th Channel: 2500-2570MHz (4G 2500)

6th Channel: 2570-2690MHz (4G WiMAX)

7th Channel: 135-175MHz (VHF)

8th Channel: 400-470MHz (UHF)


*Colour: Black

*Antenna: 8 external omni-directional antenna

*Jamming Radius: Radius 1-40 M

the Cellular signal 2G/3G must ≤-75dBm in the location

the Cellular signal 4G must ≤-115dBm in the location

The jamming radius still depends on the strength signal in given area

*Available System: include analog (AMPS, TACS, NMT) and digital (GPRS, GSM, 3G, DCS, CDMA, PDC, TDMA, PHS, PCS, IDEN, W-CDMA, UMTS, 4G, 5G, Wi-Fi, Bluetooth, and etc.)

*Safety Regulation: AC Adapter UL (E190582) / CSA (LR112971 Level 3)

*Jamming Type: sweep jamming

*Single Output Power: +33dBm / 2W±200mA

*Total Output Power: 16W

*Working Power Input: AC 110V 60Hz ~ AC 240V 50Hz to DC 12V / 24V, with car charger

*Dimension: 345(L)×120(W)×58(H)mm (not including antennas)

*Full Set Weight: 3kg

*Antenna Gain: 3dBi

*Working Temperature: -30℃ to +60℃

*Relative humidity: ≤85%(RH) (please keep the machine dry)

*Air pressure: 86~106kPa


3. Features

*full bands blocking, all in one, multi usage, powerful stationary jammer.

*adjustable working power and range to avoid blocking adjacent areas.

*8 channels is working separately, can switch each channel on/off respectively.

*low noise, good cooling system with 3 high power cooling fans and its big heat sink case, to support long time non-stop working.

*external high gain 3dbi omni-directional antennas, all the TX frequency covered downlink only.

*built-in AC110-240V to 24V adapter, safe and easily use.

*with car storage battery charger DC12V/24V can be used in car.

*while effectively shielding CDMA / GSM / DCS / PHS / 3G / 4G and other mobile phone signals.

*can block walkie talkie VHF UHF signals well, to keep safety.

*can shield 2.4G WIFI / 5.8G WIFI and wireless video transmission signal (optional).

*with infrared remote control Turn ON /OFF power in 2-5meters.

*ODM and OEM orders are welcome, you can select any 8 bands for your require.

4. Operation Instructions

*open the package, take out the jammer and its accessories.

*install the antennas to the correct position on the jammer as the number indicated.

*connect the AC plug, and switch on the electricity until the LED light is green on.

*switch the power adjustable button to its maximum one by one, the jammer is working (please do not shield the antenna between the blocking object and the jammer to affect its performance).

*since the valid scope covered by the jammer is a round area with the isolator as the center, please put the jammer in a central part of the blocking area, to help get a best performance.

*please keep away strong electromagnetic sources with heat sources to ensure high isolation affect and stable operation for a long time.

*switch off the device in time when not using it, lest the normal operation of mobile phones be affected.

*while using the isolator outdoors, be sure to keep it away from water or damp.

*keep away from caustic gases and liquids, and be sure to make it dust-proof and moisture-proof, lest the aging of the components inside should be accelerated.


*the jammer needs no special maintenance.

*do not use chemical solvents or prevent water from entering into the device when cleaning its surface.

*when not use, the device must be placed in dry and ventilated places, to avoid its contact with salty mist and noxious gases.

*the warranty period is one year. It is repaired free of charge for three years and maintained for life, only need buyer bear the shipping cost it has.

6. Application Area

Suitable to be used in meeting room, conference room, museum, gallery, theater, concert hall, church, temple, restaurant, classroom, training center, factory, bank, train, car bus etc, at the places where mobile phone is prohibited to use, to provide you a safe environment.

7. Packing List

1pc x jammer main unit

1set x antennas (8pcs)

1pc x AC adapter

1pc x AC power cable

1pc x car charger

1pc x user manual (optional)

Why is there still a signal on the phone's signal indicator when it works?

A: It's just an illusion.In fact, the mobile phone has been unable to communicate.When you press the pull button, you will find that there is no signal on the signal indicator.The cell phone signal shield will not interfere with the normal work of other electronic devices. The antenna should be installed on the corresponding signs of each channel on the host, and then connected to the host power supply.

The effective coverage of the shield is a circular area centered around the shield, so be careful to choose the location of the shield so as to avoid blocking the dead Angle?

A: No.This is because the electromagnetic signal emitted by the cell phone's signal shield is completely within the country's mobile operating band, which only blocks mobile communication.And this signal is always in a relatively static state, and will not affect any electronic equipment.

Are cell phone signal Jammer harmful to people and mobile phones?

A: Please rest assured that the electromagnetic signal intensity emitted by the cell phone signal Jammer is very weak. The test data indicates that this signal strength is far from harmful to the human body.At the same time, the mobile phone signal shield is just blocking the forward signal of the phone, so that the cell phone cannot be connected with the base station, so there will be no damage to the phone itself.

Is there any difference between the effective shielding distance of the mobile phone signal shield in indoor and outdoor use?

A: There are.The effective shielding distance (30-40 meters) of the cell phone signal shield is generally referred to as indoor distance.In open areas, the effective distance of shielding can be several hundred meters.It should be noted, whether they are within the room, or in outdoor use, effective shielding effect of shielding distance has relationship with environmental conditions, such as from the base station near and far, placed, etc.Therefore, when using cell phone signal shield, this factor should be fully taken into account to avoid blocking the dead Angle and thus affect the shielding effect.

Is the cellular signal shield the same for GSM mobile phones and CDMA mobile phones?

A: that's a good question.Because CDMA mobile phone's anti-interference performance is far superior to that of GSM mobile phone, the effective shielding distance for CDMA mobile phone is smaller than that of GSM mobile phone, but the difference is not very large, about 2-4 meters.But it also reminds users to pay attention to some particularly important sites, and should increase the number of mobile phone signal blockers when necessary to ensure the shielding effect of CDMA mobile phones.

After working for a period of time, the mobile phone signal mask is hot. Will working long hours damage the machine?

A: thank you for your care. This is a normal phenomenon.In the design, we use the thermal conductivity of aluminum alloy to assist the heat dissipation.This can guarantee long time stable work.As a result, the machine will not damage the machine.

Write a review here:

  • 1 Star2 Stars3 Stars4 Stars5 Stars (No Ratings Yet)
    Loading ... Loading ...

  • 3 × two =

  • JPEG only
  • The following is the process you should take to complete your order through bank to bank transfer:

    1. Please go to your bank (through online banking, ATM or going into a branch) and complete the transfer of money. Make sure that the amount you transfer is the exact total of your order. Payment details below:

    - If your bank is located in Austria, Germany, Spain, France, United Kingdom, Italy, Netherlands, Belgium, Finland, Greece or Luxemburg you will pay to our WorldPay bank. You will see the bank details once you have placed the order.

    PLEASE NOTE: If you are paying to our WorldPay bank you MUST include the Unique Payment Reference Number (you will receive this directly after paying the order) in the description section when completing payment to help us identify your order. Failure to do this will result in an unsuccessful transaction.

    - If your bank is located in a country not listed above you will pay to our HSBC account. The details are below:

    Bank Account:
    Bank Code:
    Bank Name:
    Bank Address:
    SWIFT Code:

    PLEASE NOTE: If you are paying in this way you MUST write your Yourname order number in the description section when paying so we can easily recognize your payment. Failure to do this will result in a delayed or failed transaction.

    2. When this is done, log in to your Yourname ‘My Account’ and complete the following:

    Click ‘Order list’
    Click ‘Pay’
    Click ‘Complete Payment’ and fill in the related information for verification (This is an important step. If the information you have filled in does not match your bank details the payment can not be completed.)
    Click ‘Submit’ to finish the procedure.

    3. You will receive a payment confirmation email from us after your order’s payment has gone through successfully. If you do not receive this email, please contact us here: http://www.Yourname.com/help/

    Please note that Yourname will begin to handle your items after payment has been cleared.

    The tailoring and handling time is the number of business days we will take to process your items before shipping them. This processing includes order verification, item manufacturing, quality checking and packaging. This does not include the shipping time.

    Different items and categories have different tailoring and handling times. However, on each item page the information is displayed next to the item photo as shown in the picture below.

    Tags: , , , , , , ,

    You May Also Like: