High-power Cellular Signal Jammer - SJ500


Signal Jammer












SJ500 Series signal jammer is a cellular signal blocker for GSM/DCS/CDMA/PHS/UMTS/WCDMA/3G cellular signals.
1)used for small area coverage
2)easy to install and free of maintenance

1. The mobile phone signal jammer is made up of up-to-date paste components and integrated circuits. With advanced performance, it is easy to install and use, and can work continuously for a long time.

2. As the manufacturing process strictly follows ISO9001 quality system, the device works stable and reliable. It is an ideal, reliable security product, which can be used to strengthen information security, and protect safe production and protect the environment at the same time.


See the overview of Signal Blocker.


Signal Blocker


Brief Signal Blocker


  • Unique color LEDs to indicate power supply and signal level of uplink and downlink;
  • Linear power amplification to effectively suppress intermodulation and spurious emission;
  • "Plug & Play" - basically no needs for configuration and free of maintenance.


Mobile phone signal isolator is also known as mobile phone jammer / partition device / Suppressor / disconnect device / screen device which can range in diameter and 30-40 m partition GSM / CDMA / AMPS / DCS / PHS mobile phone signal that the phone can not play and receive, but will not interfere with the work of other electronic devices, cell phones range from partitions, you can resume normal use. And the human body without any damage. Therefore, the product can be installed at gas stations, oil depots, liquefied gas stations and other flammable areas: military, public security and government agencies have restrictions on mobile phones and some other places: hospitals, conference rooms, concert halls, cinemas, schools, library, examination room, and churches need to prevent mobile phone interference, quiet place.



Application for Signal Blocker


To block signal coverage where signal is not allowed..

  • Small area, e.g. schools, underground or semi-underground rooms, small basements, underground parking lot, some some special area, etc.;
  • Small zones with hot traffic: meeting rooms, supermarkets, offices, pubs, coffee shops, gyms, etc.;
  • Private homes or villas at outskirts with bad signal coverage.


  • Datasheet for Signal Blocker
  • SJ500 Series Data Sheet

For other Series of PICO and Mini Amplifier, please click MR200 Series Mini Repeater

Cellular Signal Jammer - SJ500 Series
signal jammer
Specification - Signal Jammer
A) Compact Size, Light Weight;
B) Simple operation, easy installation
C) Band covers the whole, the scope of optional shielding;
D) No damage to mobile phone;
E) Reliable operation, without the need to maintain hand;
F) Environmental protection equipment, no damage to human body;



for references only, customized products will be with different parameters according to requirement.


Output Frequency(Mhz) Average output up (dBm) Channel Export Power
CDMA 870-880 35 8 dBm/30KHz
GSM 930-960 35 5 dBm/30KHz
DCS 1805-1880 35 2 dBm/30KHz
PHS 1900-1990 35 2 dBm/30KHz
3G WCDMA 2110-2170 33 2 dBm/30KHz
3G TD-SCDMA 2010-2025 33 2 dBm/30KHz
Power Consumption : 36W
Jaming Range(radius): 30-40m
Size: 225*930*30mm
Net Weight: 1.9Kg


Product Model