It is the function selections of cell phone jammer

It is the function selections of  cell phone jammer . Emission values of less than 1.0 watts / kg, its not harmful to humans. The Bluetooth antenna is not on board the middle, otherwise interfere too much, the effect that the poor can not use. Fixed the antenna bracket and the motherboard must have a positioning hole of the card hook is recommended fixed with screws. Can not use the gum way,