Now signal jammers have become one of the favorite tools for users to protect privacy, and jammers with single antenna or hidden antenna generally have the advantages of being easy to hide and easy to carry. Usually they are not easy to attract people's attention, and the price is relatively cheap, so They are the most common type of signal jammers purchased by users, especially beginners. With the increase in demand, the 2-4 antenna is a technical upgrade based on this, which retains good portability and adds more frequency options. The mobile phone jammer can interfere with 2 or even 4 frequency bands of different frequencies at the same time, which increases the practicability of the jammer.
If you need an inexpensive short-range jammer, either out of curiosity, or for your privacy, these 1-4 antenna jammers with limited range are a good choice, they're not easy to spot, There are also very few complaints. Commonly used in personal protection, cars, homes, small meeting rooms and other places.