• Greetwin 21 Band 21W GPS Lojack WiFi 3G 4G 5g Jammer Cell Phone Signal Blocker
  • Greetwin 21 Band 21W GPS Lojack WiFi 3G 4G 5g Jammer Cell Phone Signal Blocker
  • Greetwin 21 Band 21W GPS Lojack WiFi 3G 4G 5g Jammer Cell Phone Signal Blocker
  • Greetwin 21 Band 21W GPS Lojack WiFi 3G 4G 5g Jammer Cell Phone Signal Blocker
  • Greetwin 21 Band 21W GPS Lojack WiFi 3G 4G 5g Jammer Cell Phone Signal Blocker
  • Greetwin 21 Band 21W GPS Lojack WiFi 3G 4G 5g Jammer Cell Phone Signal Blocker

Greetwin 21 Band 21W GPS Lojack WiFi 3G 4G 5g Jammer Cell Phone Signal Blocker

Colour: Black
Size: 220*140*70mm
Jamming Range: up to 40meters, Depend on Signal Strength
Antenna: 21 PCS Omni Antennas
Transport Package: Neutral Packing
Specification: ISO9001
Samples:
US$ 490/Piece 1 Piece(Min.Order)
| Request Sample
Customization:
Manufacturer/Factory, Trading Company

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Rating: 5.0/5
Guangdong, China
High Repeat Buyers Choice
More than 50% of buyers repeatedly choose the supplier
Years of Export Experience
The export experience of the supplier is more than 10 years
Experienced Team
The supplier has 8 foreign trading staff(s) and 2 staff(s) with over 6 years of overseas trading experience
R&D Capabilities
The supplier has 7 R&D engineers, you can check the Audit Report for more information
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Basic Info.

Model NO.
GW-JN21XF
Trademark
Greetwin
Origin
Shenzhen
HS Code
8517699000
Production Capacity
10, 000PCS/Month

Product Description

21 Antennas Cell Phone Blocking Gps Lojack Wifi Cell Phone Signal  Jammer


The Signal Jammer is a device which deliberately transmits signals on the same radio frequencies as mobile phones, disrupting the communication between the phone and the cell-phone base station, effectively disabling mobile phones within the range of the jammer, preventing them from receiving signals and from transmitting them. Jammers can be used in practically any location, but are found primarily in places where a phone call would be particularly disruptive because silence is expected, such as entertainment venues

Greetwin 21 Band 21W GPS Lojack WiFi 3G 4G 5g Jammer Cell Phone Signal BlockerGreetwin 21 Band 21W GPS Lojack WiFi 3G 4G 5g Jammer Cell Phone Signal BlockerGreetwin 21 Band 21W GPS Lojack WiFi 3G 4G 5g Jammer Cell Phone Signal BlockerGreetwin 21 Band 21W GPS Lojack WiFi 3G 4G 5g Jammer Cell Phone Signal BlockerGreetwin 21 Band 21W GPS Lojack WiFi 3G 4G 5g Jammer Cell Phone Signal Blocker

GW-JN21XF-E(Europe) 5G + 5GHZ GW-JN21XF-A (America) 5G + 5GHz
2 x 758-830MHz: 1.0W 5G, 4G LTE Low (Two Bands) 2 x 850-895MHz: 1.0W CDMA 850 (Two Bands)
2 x 920-965MHz: 1.0W GSM900 (Two Bands) 2 x 1800-2000MHz: 1.0W DCS, PCS (Two Bands)
2 x 1800-1920MHz: 1.0W DCS (Two Bands) 2 x 2100-2170MHz: 1.0W 3G, UMTS (Two Bands)
2 x 2100-2170MHz: 1.0W 3G, UMTS (Two Bands) 2300-2500MHz: 1.0W 4G LTE + WiFi 11.b & g
2400-2500MHz: 1.0W WiFi 11.b & g 2 x 2500-2700MHz:1.0W 4G WiMAX Sprint (Two Bands)
2 x 2570-2690MHz:1.0W 4G LTE High (Two Bands) 2 x 700-800MHz: 1.0W 4G LTE USA  (AT&T & Verizon) (Two Bands)
1450-1620MHz 1.0W 5G+ GPS L1 +Glonass L1 1570-1620 MHz: 1.0W GPS L1 + Glonass L1
164-173MHz :1.0W Lojack 164MHz 173MHz 1.0W
315MHz :1.0W Remote Control 315MHz :1.0W Remote Control
433MHz :1.0W UHF Remote Control 433MHz :1.0W UHF Remote Control
868MHz: 1.0W Remote Control 868MHz: 1.0W Remote Control
5.1-.5.9GHz :1.0W WiFi 11.a 5.1-.5.9GHz :1.0W WiFi 11.a
1170-1280MHz: 1.0W GPS L2 + L5+ Glonass L2 1170-1280MHz: 1.0W GPS L2 + L5+ Glonass L2
5G 3400-3600MHz 1.0W 5G LTE 5G 617-652MHz 1.0W 5G LTE
5G 3600-3800MHz 1.0W 5G LTE 1700-1800MHz : 4G LTE
400-480MHz :1.0W UHF Remote Control 400-480MHz :1.0W UHF Remote Control
Total: 21.0 W Total: 21.0 W
Power supply: AC100-240V or 12V Car Charger
Jamming Range Radius 1-20 meters (depends on local signal)
Working time: 2.5 Hours, BatteryNi-Mh battery 16000mAH
Can Turn on and Charging at the same time, Each Band can Turn ON/OFF,
Battery Status LCD
Weight 1.6Kg
Dimension: 220 x 140x 70mm (Main Unit only, do not include Antennas)
Warranty: 1 year
1: 164-173MHz Lojack America Type:21 Bands
2 & 19 : 1800-1920MHz: DCS, GSM1800, PHS, PCS, CDMA1900 1: 173MHz Lojack
3 & 20: 2100-2170MHz: UMTS, 3G, WCDMA, TD-SCDMA, CDMA2000 2 & 19: 1800-1990MHz: GSM, GSM1800, PHS, PCS, NEXTEL, CDMA1900, GSM1900
4 & 21: 2570-2690MHz: 4G High WiMax2, 4G LTE 3 & 20: 2100-2170MHz: UMTS, 3G, WCDMA, TD-SCDMA, CDMA2000
5: 1450-1620MHz GPS L1 + Glonass L1 +5G LTE 4 & 21: 2500-2700MHz: 4G Wimax (Sprint), 4G High LTE
6 & 18: 920-965MHz: GSM900 5: 1570-1620MHz GPS L1 + Glonass L1
7: 2400-2500MHz: WiFi/Bluetooth 11.b. g. 6 &18: 850-895MHz: CDMA 850
8 & 17:758-830MH: 5G, 4G Low LTE , 4G WiMax 7: 2300-2500MHz: WiFi/Bluetooth 11.b. g.+ 4G LTE
9: 1170-1290MHz GPS L2 + L5+ Glonass L2 8 &17 : 720-805MHz 4G LTE (AT&T & Verizon)
10: 5.1-5.9GHz: WiFi 5GHz 11.a 9: 1170-1290MHz GPS L2 + L5+ Glonass L2
11:868MHz: Car Remote or GPS L2+L5 10: 5.1-5.9GHz: WiFi 5GHz 11.a
12: 433MHz Car Remote 11:868MHz: Car Remote or GPS L2 + L5
13 315MHz Car Remote 12: 433MHz: Car Remote or GPS L3 + L4
14: 400-480MHz UHF & Car Remote 13 315MHz Car Remote
15:3400-3800MHz 5G LTE 14: 400-480MHz UHF & Car Remote
16:3400-3800MHz 5G LTE 15: 617-652MHz 5G LTE
  16: 1700-1800MHz 4G LTE



Applications:
1. 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
2. For some locations of special purpose such as hospitals, gas stations, and more, please do a field test first to make sure no interference happened to the normal operation of their equipment and instrument

 


Product Information

Features:

1. Good cooling system, work 24 hours continuously.

2. Jamming range up to 40m,

3. Stable capability, cost-effective choice

4. Output power 18w, make more efficient jamming.

5. Eight channels with different frequency range,

or customize another cellular standard in the world.

Such as 450MHz,GPRS,iDEN,GPS,UMTS,WiFi,AWS,4G.

Specification:
(1)Power supply: AC adapter (AC110-240V)
(2)Operate time: 24 hours continuous
(3)Total output power: 18W
(4)Jamming range: up to 40m, the jamming radius still depends on the strength of the signal in the given area
(5)Antenna:8 pcs ( Please fix the antenna follow the mark in the unit)



Important Notes for Jamming Distance: 
The jamming distances we mentioned on the website are for customer's reference only. The actual jamming distance will be varied depending on the signal strength and the use location, etc.

Frequency Testing Again Before Shippment:
Greetwin 21 Band 21W GPS Lojack WiFi 3G 4G 5g Jammer Cell Phone Signal Blocker
Greetwin 21 Band 21W GPS Lojack WiFi 3G 4G 5g Jammer Cell Phone Signal Blocker

Applications:
1. 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
2. For some locations of special purpose such as hospitals, gas stations, and more, please do a field test first to make sure no interference happened to the normal operation of their equipment and instrument

Greetwin 21 Band 21W GPS Lojack WiFi 3G 4G 5g Jammer Cell Phone Signal Blocker
Greetwin 21 Band 21W GPS Lojack WiFi 3G 4G 5g Jammer Cell Phone Signal BlockerGreetwin 21 Band 21W GPS Lojack WiFi 3G 4G 5g Jammer Cell Phone Signal BlockerGreetwin 21 Band 21W GPS Lojack WiFi 3G 4G 5g Jammer Cell Phone Signal BlockerGreetwin 21 Band 21W GPS Lojack WiFi 3G 4G 5g Jammer Cell Phone Signal Blocker

Q1. Could I get a sample before bulk order?

Yes, we offer the sample for all models but charged.

Q2. 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. 

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.Shipment Date

Sample 3-5 business days
<20 pcs 7-10 days
20-50 pcs 10-20 days
>50 pcs Negotiate

Q5: Delivery Date of the sample by DHL/FedEx
USA/Canada/Europe/Asia 3-5 days
Middle East/Latin American 5-7 days
African 3-7 days

Q6.Payment Method
T/T, Western Union, Paypal, and Credit Card are available,
but we suggest paying by Alibaba Trade Assurance, the most favor, and security method.
*Other methods please contact us with more details.

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