8 Antennas Handheld Cell Phone Isolator, Block 2G/3G/4G and LOJACK GPS WIFI Signals,jaming radius up to 20meters , 4000mAh (4W),Portable Signal Isolators
  • Sign In or Join Free
Your position: Home > Signal Isolators > Portable Signal Isolators

8 Antennas Handheld Cell Phone Isolator, Block 2G/3G/4G and LOJACK GPS WIFI Signals,jaming radius up to 20meters , 4000mAh (4W)

Item Code: N8B
Sold: 267
(17% OFF)
PDF Format
    Please select the information you wantX
Shipping Cost:
Estimated Delivery Time:
Please select the country you want to ship from
  • Description
  • Select Guide
  • Payment

Product Information
Name: 8 Antennas Handheld Cell Phone Isolator, Block 2G/3G/4G and LOJACK GPS WIFI Signals,jaming radius up to 20meters , 4000mAh (4W)
Model: N8B
Color: Black

Basic Specifications
Jam Signal Type
N8B-LG: Full Bands Mobile Phone 4G/3G/2G +WiFi2.4G+ GPSL1+LOJACK
Output PowerTotal 4W0.5W each band
Jam Radius2-20meters
Power SupplyAC110-240V to DC12V
Cooling SystemHigh efficiency aluminum alloy radiator, Build-in 1 cooling fan
Working TimeContinue working 1.5 Hours
Product Size132x80x41mm (not include antenna),
Product Weight: appr.0.8kg
Package ContentsJammer Host x 1, AC Charger x 1, Omni-antenna x8, DC12V car charger x1
Product Description
8 Antennas Portable Cell Phone blocker,blocking all types of Android phones, Tablets, Smart Phones, iPhones, Windows phones etc. that use 2G, 3G, 4G, GPS L1-L5, LOJACK, or Remote Control 315Mhz 433MHz and Bluetooth WIFI wireless signals popular in 2018 and in years to come, build-in Ni-Mh battery 4700mAH working 1.5 Hours

8 Bands 4.0W with Ni-Mh battery 4700Mah, Working 1.5 Hours Support use while battery charging.
Shielding radius: (2-20) meters at -75dBm with high gain omni antennas
With DIP switch, separate switch for each band, accompanied with a working LED light
Could be used in car directly, with car charger and AC charger
Inside cooling fans and Bigger heatsink design ensure the device to work continuously
OEM Customized Service
Customized for special frequency band , GPSL2 L3 L4,Wireless Camera 1.2GHz,4G1700MHz, etc.
Silkscreen OEM service can be offered

It can be applied at meeting rooms, conference rooms, museums, galleries, theatres, concert halls, churches, temples, restaurants, classrooms, training centers, factories, banks, trains, bus and more Places that require silence, confidentiality and information security
 For some locations of special purpose such as hospitals, gas stations and more, please do field test first to make sure no interference happened to the normal operation of their equipment and instrument
Key technical specifications:N8B-LG
Channel Output port Frequency range Average out-putting power
1 LoJack 167-175MHz 27dBm/0.5W
2 CDMA or GSM 851-894 or 925-960MHz 27dBm/0.5W
3 DCS or PCS 1805-1880 or 1920-1990MHz 27dBm/0.5W
4 Wi-Fi 2.4G 2400-2500MHz 27dBm/0.5W
5 4G1 LTE 700-803 or 790-862MHz 27dBm/0.5W
6 GPSL1 1570-1580MHz 27dBm/0.5W
7 3G 2110-2170MHz 27dBm/0.5W
8 4G Wimax 2500-2690 or 2300-2400MHz 27dBm/0.5W
Power supply: AC adapter 50 to 60Hz, (110-240V AC to 12V DC)     Car Charger DC12V
Dimensions: (length, width, height) 132x80x41mm  (not include antenna)
Packing size: 220x202x65mm          Net weight: 0.6kg        Gross weight: 0.8kg
Total power: 4.0W     
Shielding radius: (2-20) meters at -75dBm,Still depends on the strength signal in given area
Built-in battery:7.4V/4700mAh,Continue working: more than 1.5+ hours
Warranty: one year from delivery date
Most of the time it is not easy to select which particular jammer a customer want, kindly CLICK HERE to see the selection Guide,Customer only need to click Refine then select the frequency and the range they after and the model with those preferences automatically appear.

European countries frequencies are different to American frequencies, we will adjust the frequencies to the selected country order. Also if you would like us to make a Custom frequencies jammer, kindly send us email at
We currently support following payments:

1.Paypal checkout,Customer can pay with Paypal without going to Cart or inputting any shipping information.

2.Debit or credit card,Customer can pay with card without a paypal account or membership.

3.Paypal Invoice,If customer have any problem to place order,please leave us an email address,We will send a paypal invoice to your email,you can simply click pay as below guide

Customer Reviews
Average rating:

5(based on 3 reviews)

Share your thoughts with other customers

Create an Account
Change Account
Order Tracking
Contact us