What are the operational precautions of wireless signal detectors?
Wireless signal detectors are used to detect and monitor radio signals and mainly include two functions: search and monitoring. Search mode helps to locate currently active transmitters, while monitoring mode allows continuous monitoring of radio signals for timely detection.
To start a search with a wireless signal detector, it is important to turn off all radio signal sources in the target area, including mobile phones, cordless phones, Bluetooth devices, Wi-Fi, and microwave ovens. Activate the transmitter using any sound source and place the RF detector in the center of the room. Start the search mode, gradually approach the suspected location of the transmitter, and observe the change in signal level. The detector provides sound and light indicators for signal detection. As you get closer to the signal source, the flashing frequency increases, and a rapid increase in frequency may indicate the presence of hidden surveillance equipment.
Once the search is completed, switch to monitoring mode and place the wireless signal detector in a convenient location. It is very important to ensure the stability of the detector to avoid false alarms. When a threat signal is detected, an alarm will be triggered. The effectiveness of signal detection in monitoring mode depends on the correct setting of the threshold level. For example, in the case of mobile phone signals, it depends on the amplitude value of the signal.
In the digital signal monitoring mode of the wireless signal detector, it is necessary to define the signal level of mobile phones, cordless phones, Bluetooth devices and similar devices and adjust the threshold level accordingly. A higher threshold will reduce the false alarm rate, but may limit the monitoring distance.
What are the different types of cell phone signal jammers?
There are two main types of cell phone signal jammers in common use: exam jammers and wall-mounted cell phone signal jammers.
Exam jammers work by disrupting the connection between mobile phones and base stations within a specific frequency range. These jammers create chaotic interference to the information signals received by the mobile phone by scanning the frequency range at a certain speed. This prevents the mobile phone from establishing a connection with the base station, effectively blocking the mobile phone signal and ensuring a undisturbed environment during the exam.
Wall-mounted cell phone signal jammers combine the functionality of a cell phone signal jammer with an aesthetically pleasing design. They are particularly suitable for large conferences and high-security venues where confidentiality is of paramount importance.
An example of such a device is the BPS-7A Smartphone Signal Jammer, an indoor device used in a variety of situations where cell phone signals need to be blocked:
In educational institutions, it ensures complete signal blocking during exams, promoting an environment for fair exams. These devices have highly efficient shielding capabilities and incorporate heat dissipation to prevent fan noise from interfering with the exam process.
In high-security locations, wall-mounted jammers are discreetly installed to blend into the surrounding environment. They provide stable shielding performance and eliminate intermittent signal interference. The signal blocking range can be adjusted, providing long-distance blocking capabilities.
In correctional institutions, the BPS-7A smartphone signal detection and blocking machine enhances the management of detention centers and other regulatory areas. The concealed mural installation reduces resistance from prisoners and staff. The murals can be customized with educational reform messages to serve as a constant reminder. The devices are designed with high-gain line capabilities, allowing the signal to effectively penetrate the prison door. By strategically placing several devices on each floor of a standard 100-meter prison building, complete signal blocking can be achieved without any blind spots near windows.
These different types of mobile phone signal jammers meet different needs and environments, ensuring effective signal blocking in specific environments.
