16 channel signal shi eld jam mer detector anti-sp y device 16 antennas cdma gsm dcs 2g 3g 4g 5g gps bro ken, Silver

to check the room or car safe or not, you can put it in one room or car, then
open the auto search, it will search automatically, once received one time of
signal,the light bars will light one, if received 6 times,the light bars will
light at 6 lights,then it will sound alarm to remind you that there is a
suspicious signal frequency(1mhz-12ghz): once there is a suspicious signal, you can use it to
detect it there is a suspicious signal in your car,you can use the detector to find it
out with magnetic light.syi