The main method of using the signal jammer is to first select the area where the mobile phone signal needs to be cut off, and place the cutoff device on the desktop or wall in this area. Then, after the installation is completed, turn on the power supply of the disconnector and turn on the power switch.
After the signal jammer device is connected, press the power switch and the disconnector can work. At this time, all the mobile phones that are turned on on the scene are in the state of searching for the network, and the base station signal is lost, and the calling party and the called party cannot establish a call connection.
We all know that within a certain frequency range, the mobile phone and the base station are connected by radio waves to complete the transmission of data and sound with a certain baud rate and modulation method. According to the above communication principle, the signal jammer scans from the low-end frequency of the forward channel to the high-end frequency at a certain speed during the working process. The scanning speed can cause garbled interference in the message signal received by the mobile phone, and the mobile phone cannot detect the normal data sent from the base station, so that the mobile phone cannot establish a connection with the base station.
Oil depot cell phone signal jammer product features:
1. The oil depot signal jammer can effectively shield the 2G+3G+4G mobile phone frequency band + WIFI wireless network jammer;
2. The new aluminum alloy oxide shell with high heat dissipation performance is adopted, and the equipment has good long-term working stability;
3. Adopt foreign advanced chips and technology, slow start circuit design, high integration;
4. UHF broadband interference technology is adopted, which only interferes with the downlink, not the base station;
5. Using multi-channel segmented independent shielding 3G/4G technology, the shielding effect is better;
6. The transmit power of a single machine is 25W, and each channel is about 2W-5W;
7. The effective shielding range is 0-50 meters (depending on the operator's network signal condition);
8. It can work continuously without downtime all year round;
Advantages of mobile phone signal jammer for oil depot:
1. Powered by industrial-grade switching power supply, equipped with a precise voltage regulator circuit, even if the voltage fluctuates greatly, it will not affect the normal operation of the host;
2. The main body shell is designed with a fully enclosed protective shell, which fully considers the waterproof, dustproof, anti-damage and other issues of the special site;
3. Equipped with an exclusive duct ventilation cooling base, the cooling fan speed can be adjusted;
4. It can be used continuously for many years, with stable performance and long service life;
5. The cell phone signal jammer of the oil depot is harmless to the human body. Complete product inspection and inspection reports; passed the Ministry of Public Security inspection and electromagnetic radiation safety inspection;
Applicable places for cell phone signal jammers in oil depots:
1. Shielding of mobile phone signals in various test classrooms such as English grade test, college entrance examination, high school entrance examination, adult test, etc.;
2. Party and government organs, enterprises and other meeting places that need to be kept confidential;
3. Courts, detention centers and large, medium and small prisons, etc.;
4. Oil depots, oil depots, oil fields and other flammable and explosive places;
5. All places where cell phone use is prohibited.