For Europe and Middle East - Adjustable Desktop Cell Phone Jammer with Four Bands

For Europe and Middle East - Adjustable Desktop Cell Phone Jammer with Four Bands
The shell of jammer will become hor affer working for some times.
Does the long-time keeping in working condition will damage the machine itself?
It is very normal.When design,We are thinking of taking use of the conductivity of metal shell to help the heat sinking during our designation,by this way,the machine can be kept in good working condition for long time.