With the advent of summer vacation, primary and secondary schools all over the country began to have holidays, but the tests for parents have come one after another-what should I do if children are addicted to cell phone chat, what should they do if they don’t have a good rest and play mobile games in the middle of the night, children hold their phones all day and are indifferent to other things How to do? These are the questions I have received the most recently.
When encountering such consultations, I generally recommend parents to communicate with their children so that they can learn to self-discipline. However, some parents also reflect the actual difficulties and hope to purchase home cell phone signal jammer to interfere with/cut off cell phone signals. Yesterday, an older brother hoped that his younger sister could concentrate on studying. He sacrificed the fun of playing with mobile phones and bought a cell phone signal jammer. My heart is still very warm!
Then let’s talk about how to choose a mobile phone signal jammer at home (to prevent students from indulging in mobile phones)?
Shielding range: The shielding range is proportional to the power. For low-power signal jammers, one is enough to install in a room, and the shielding area is about 20 square meters; while for high-power jammers, the shielding distance can reach 100-400 square meters. The local field strength is different or whether you need to go through the wall to decide (some parents will choose to install the mobile phone signal jammer in their own room).
Signal strength: The distance between the surroundings and the signal base station and now many cell buildings have signal base stations or signal amplifiers. According to the shielded frequency band: Before purchasing, you need to know which signals you want to shield. The ordinary mobile phone signal (2345G) can be selectively shielded. If you only shield 2G or only 345G, this can be adjusted before leaving the factory. There are 2.4GWIFI, 5.8GWIFI, VHF, UHF and other frequency bands. Here we need to explain the function of each signal frequency band. Simply put, 2G is the frequency band for making phone calls, and 2345G is the frequency band for mobile phones to access the Internet, so it depends on the specific shielding frequency band requirements.
Appearance: The appearance of the mobile phone signal jammer can be divided into an external antenna and an internal antenna. In general, the external antenna is externally installed and stretches out, so it takes up more space than the internal antenna. The volume is larger; because of the antenna extending outward, the effect of the external antenna is more stable.
Power supply: Generally, the power supply of the jamming device is the built-in lithium battery. After the power is used up, the power adapter can be used for charging; the desktop examination room uses 220V voltage power supply, and the car-mounted vehicle generally uses 12-36V voltage power supply.