About the cell phone jammers

There exist express terms about the safety degree of the electromagnetic waves in China. The rules for electromagnetic waves defense is approved by National Environmental Protection Agency on March 11, 1988 and executed on June 1 of that year. It furnishes the safety level for the rays to people. For the society, the medium value of field force of the rays at the frequency of 30-3000MHz must be within 0.4w/sm for any 6 moments in a twenty-four hours. The cell phone jamming devices made by official organizations will be visited by the related office.

Usually, the signal jamming device utilized in the auditorium and encounter room are low power tools. And the establishing locations are strictly restricted. They are usually placed in the auditorium passage or somewhere behind the tutor table. It will be 2-3 m away from the folks. The rays danger has been restricted in the security range.

For the little room, on no account should we place the great power compact gps jammer whose coverage radius is more than fifty meters. The great power cell phone jammer has the bigger electromagnetic field force.

Should the rays be the wellbeing danger to the people? It's not the precise case. We understand that the cell phone, microwave oven and Television all give off rays. But the rays may be neglected in a definite radius and time. It won't guide to irreparable harm to our corps. That is why it's broadly used in the world and may never be given up.