5-Band 2G 3G 4G LTE Mobile Phone Blocker

SKU: B40


Out of stock

This is an upgraded portable 2G, 3G, 4G Mobile Phone Jammer. There are 5 cellular channels. It covers 2G 3G and part of 4G LTE or WiMax in an average 5~15 meters. Ideal for business trips. Temperature control cooling fan. 1.5 ~ 2 hours working time. 24/7 working continuously on a wall charger.


B40 is the Upgraded Cellular Jammer covering all 2G 3G and part of 4G signals. It’s the newly launched model in September of 2011. It becomes famous because it also covers 4G signal.

Total 5 cellular channels have been built-in one unit. You take it with you when traveling without worrying about Cellular networks.

One DIP switch is on the right side. It allows you to turn on or turn off different bands according to the conditions. The related indicator will turn on/off isochronously.

B40 Jammer has a built-in high capacity battery pack. Regular battery life is 1.5~2 hours. You can connect it to an external 4000mah battery pack to get extra 3~4 hours working time. In order to work continuously 24/7, you should leave the jammer on a wall charger.

The slim curt designed 5-band cellular phone jammer is built with creative air slots and an effective cooling fan.

Features of B40 Portable 2G 3G 4G Jammer

  1. Upgraded design created in September 2011;
  2. All-sided functions cover 2G 3G signals and part of 4G networks;
  3. Thanks to an outstanding power, it manages to cover average 5~15 meters radius;
  4. Embedded strong and mini size cooler fan controlled by temperature module;
  5. With creative air slots in the case;
  6. High capacity rechargeable batteries;
  7. Works on power adapter directly;
  8. 12 months quality warranty

Applications of Handheld 2G 3G 4G LTE / WiMax Jammer

Business meeting rooms, museums, galleries, theatres, concert halls, churches, temples, restaurants, classrooms, training centers, factories, banks, trains, buses, etc. Ideal for use in places of special purpose such as hospitals, gas stations and so on.


  • 1 x B40 – 4-band Cellular Jammer
  • 4 x SMA Whip Antennas
  • 1 x Easy Carry Bag
  • 1 x AC Power Adapter (Wall Charger)
  • 1 x Car Power Adapter

Technical specifications

Product Code: B40
Frequency: RF1 851-894MHz RF2 925-960MHz RF3 1805-1880MHz RF4 1930-1990MHz RF5 2110-2180MHz 4G WiMax or 4G LTE
Working Object: 4G WiMax or 4G LTE, GSM, GSM900, GSM1800, DCS, 3G, UMTS, WCD
Signal Source: PLL Synthesized
Output Power: 1040mW
Jamming Range: 5~15 Meters
Antenna Interface: 4 x Strong rubber SMA antenna 3db
Remote Control: N/A
Working Current: 2,800 ~ 3,400 mA
Power Supply: Battery and power adapters
Battery: Lithium-ion battery 8.4V 5200mAh - Battery life 1.5-2 hours - Recharge time 4 hours
Power Adapter: AC Adapter 110-250V 12VDC 2000mA - Car Adapter 12V 12VDC 2000mA

Extra Info

Color: Black or Silver
Brand: Jammers
Dimensions (LxWxD): 108/187 x 61 x 33mm
Package: Neutral blank brown box with polyfoam
Operating Temperature: 0-50 degree
Humidity: 5% - 80%
Warranty: 1 Year