Product description :
This jammer is specially for prisons and other large sensitive locations such as military or governmental compounds. 
It can effectively shield (interference) in the radius of 100-500 meters all indoor and outdoor signals such as 2G / 3G / 4G /5G mobile phone signal and intercom, remote bomb, WiFi signal, shielding eraser, SMS pen,stealth headphones, watches cheating, glasses probe wireless signal, to prevent candidates cheat, protect the venue quiet, and to prevent bomb attacks.
Advantages:
• Aluminum-alloy casing with high protection has high resistance to dust, water and corroding.
• Heat sink designing combing with the fans to make system in a cooling status. 
• Special technology to prevent interference between each frequency band. 
• Only interfere downlink frequency of mobile system, without disturb normally working of Base Stations.
• Frequency bands and output power selectable.
• Each frequency band controlled by independent RF ON/OFF switches. 
• Power of each frequency band can be adjustable independently. 
• Circuit protection to ensure system will not burn out in case of antenna short circuiting or disconnection. 
• Antenna type options, directional or Omni-directional antennas option. 
• Easy operation and installation. 
• Keep for upgrade module installation. 
• Working 24 hours / 365days continuously.
 Specifications:

Frequency Ranges Selectable:

(Above are some Universal frequency bands, You can select four or five bands of above frequency bands in a jammer)
Following is the standard parameters for this prison jammer,OEM/ODM and customized frequencies are accpetable as well.
  
Application:
• Mainly used in examination rooms, prisons, gas stations, mobile phone bombs, oil depots, LPG stations,detention centers, interrogation rooms, courts,

• Reform-through-labour teams, conference rooms, movie theaters, churches, libraries, school dormitories;

• Special security and confidential occasions (confidential office, negotiation room, mobile vehicles, mobile political and business dignitaries guarding the scene;

• All kinds of military sites and other prohibited places to use mobile phones.

Terms and conditions: