We know that for most handheld signal jammers, the color is black. If you want your cell phone jammer to have a special color, then you can take a look at this Handheld GPSL1 2G 4G Optional Button Make Cell Phone Blcoker Raspberry Pi , introduce it here and you will know this Handheld Optional GPS 4G Cell Phone Jammer Designed in gold. Then learn about the shielding situation of the optional 4G GPS signal jammer, then you will soon know that this 4G GPS signal jammer has an optional button that allows each frequency band to work individually or at the same time, so you can Choose the shielding frequency band according to your own situation.
Although this is a portable GPS cell phone jammer, the shielding range is up to 15 meters depending on the signal strength of blocking PSL1 CDMA GSM DCS PCS and 4G signals in a given area. And thanks to the built-in cooling fan design, you can even use it while charging, and you can easily use the car handheld optional GPS 4G cell phone jammer with a car charger. Speaking of exams, I believe this is very familiar to everyone. During my student days, I actually went through all kinds of exams, big and small. Every month there are exams arranged by the school itself, the most important of which is the high school entrance examination. In fact, many schools put Make Cell Phone Blcoker Raspberry Pi in order to make the exam fair and just, just to prevent everyone from using mobile phones to answer the questions. I believe that I am not the only one who has experienced such a thing, or when I installed a mobile phone blocker.
