Q What about my house has a good spirit of our ancestor protect my family, would this machine kill their spirit ?
AThe machine can distinguist the phenomenon signal input, good spirit and bad spirit has its characteristic, the device will ignor or skip the good spirit.
QWhat happen if we unplug the machine at later time, how can we sure the ghost won't come back again with more angry ?
A The machine is smart than ghost, fear and not return. You did not battle with ghost, the machine fight with ghost for you.