4G 5G 8 Antennas 4W 20m 500mw Lojack GPS RF Signal Blocker

Basic Information
Place of Origin: China,Shenzhen
Brand Name: Greetwin
Certification: CE
Model Number: GW-JN8
Minimum Order Quantity: 1pcs
Price: 113.6USD- 134.5USD
Packaging Details: Parper box, buble wrap
Delivery Time: 5-8days
Payment Terms: T/T, Western Union, Paypal. Alibaba
Supply Ability: 1000pcs/month
Size: 132x80x40mm Function: Anti-radiation And Shield Signal
Color: Iron Oxide Black Material: Steel
Product Name: RF Signal Blocker Jammer Anti Radiation Shield Phone Case
High Light:

Lojack GPS RF Signal Blocker


500mw RF Signal Blocker


4W Portable Signal Jammer

8 Antennas 4 Watt Jamming Up To 20m Portable 2G/3G/4G/5G Mobile Phone Signal Jammer Lojack GPS Wi-Fi RF Signal Blocker


Product Description

Different jammers are available basing on their performances and on the specification of the signal to be disturbed: jammers for bugs and mobile phones, jammers for GPS devices, jammers for cameras, radio, and Wi-Fi jammers, jammers for microphones and small recorders. Further down you will find the section that examines the types and main areas of intervention of jamming devices



1. Portable design, can be put in the pocket
2. ON/OFF switch makes it more humane
3. Built-in cooling fan, rechargeable battery, continuous work: 1.5+ hours
4. Eight channels with different frequency ranges,
Or customize other cellular standards in the world.
For example,2g 3g 4g, Wifi, GPS, Lojack.
5. Multiple frequency bands can be adjusted to open or close any frequency band without affecting the operation of other frequency bands
You can choose the following frequencies:


1. It can be applied to meeting rooms, conference rooms, trains, bus and more
2.For some locations of special purpose such as hospitals, gas stations, and more
Do field test first to make sure no interference happened to the normal operation of their equipment and instrument


Accept Customized Frequency Average output power Jamming range(radius): 1-20m
(Depend on local signal intensity)
CDMA 851-894MHz 500mw
GSM 925-960MHz 500mw
DCS/PCS 1805-1880/1930-1990MHz 500mw
3G WCDMA 2110-2170MHz 500mw
4G LTE 791-821 or 725-770MHz 500mw
4G LTE 2300-2400 or 2620-2690MHz 500mw
GPS 1570-1580MHz 500mw
WIFI 2400-2500MHz 500mw
Power supply: 50 to 60Hz, AC 100 to 240V
With AC adapter (AC100-240V-DC12V)
Gross weight:1 KG
Dimension: 132x80x40mm and not include antennas
Inner box dimension:220x202x65mm
Output power: 4W
8pcs External Omni antennas
Charge full time about 4Hours, Working time:1-2Hours.
Running temperature: -10 to +55'C



Q1.Payment Method

T/T, Western Union, Paypal, and Credit Card are available,
and we suggest paying by Alibaba Trade Assurance, the most favor, and security method.
*Other methods please
Contact us with more details.

Q2.Delivery Date&Lead Time

Quantity Lead time Delivery to American/Middle East/Asia/Europe
<20 pcs 3-5 business days 3-7 business days by DHL
5-7 business days by FedEx/UPS
20-100 pcs 7-15 business days
>100 pcs 15-24 business days
*Click it to get the sample.

Q3. Can I customize frequencies?

Yes, we can customize 2G/3G/4G/5G/LoJack 173MHz, VHF, UHF, Walkie-talkie, interphone, 433MHz,315MHz, 868MHz, 450MHz, iDEN, CDMA, GSM, GPRS, DCS, PCS, AWS, WCDMA, UMTS,3G,4G, LTE 700, LTE 800, LTE 2300, LTE 2600, GPS L1, GPS L2, Galileo, Compass, Glonass, WIFI, Bluetooth, WIMAX, UAV, Drone, 5.8G, etc.

Q4. What should I do if I don't know about frequency in my country?

Please feel free to Contact us with your inquiry, we will find the frequency you need and address your problems.

Frequency Checking

4G 5G 8 Antennas 4W 20m 500mw Lojack GPS RF Signal Blocker 0

Signal Jammer

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4G 5G 8 Antennas 4W 20m 500mw Lojack GPS RF Signal Blocker 2
4G 5G 8 Antennas 4W 20m 500mw Lojack GPS RF Signal Blocker 3

Company Profile

360° Full View of Factory Evaluation

4G 5G 8 Antennas 4W 20m 500mw Lojack GPS RF Signal Blocker 4


4G 5G 8 Antennas 4W 20m 500mw Lojack GPS RF Signal Blocker 5


Contact Details
Hawk Greetwin

Phone Number : +8613005164071

WhatsApp : +8615112267605