The PL-80S mobile signal jammer can block 2G/3G/4G/WIFI signals within a radius of 1-30 meters (approximately 10-250 square meters), making it impossible for the phone to make and receive calls, send or receive text messages, but it will not interfere with the operation of other electronic devices, thus ensuring the quietness and confidentiality of the installation site. When the phone leaves the partition range, it can resume normal use without any damage to the human body. Widely used in school exam rooms to prevent cheating, student dormitory schedule management, conference room discipline in government agencies, confidentiality, maintaining quietness and solemnity in religious places, and improving production efficiency and reducing work-related injuries in factory workshops.

※ Product Features
1. The latest 4G model with multiple built-in functions blocks all WIFI/4G (TD-LTE/LTE-FDD), 3G, 2G WIFI and other signals.
2. Adopting an integrated whole machine design, the antenna and power adapter are built-in, and the new heat sink has excellent performance, ensuring long-term uninterrupted and reliable operation.
3. High quality built-in switch power supply, original imported chip, stable frequency without frequency deviation.
4. Shielding radius 1-30 meters (non fixed value, depending on the distance between the location and the base station)
5. Only block mobile phone signals, without affecting the normal operation of other electronic devices
6. Ultra low radiation, safe and environmentally friendly, with no adverse effects on human health.
7. Only blocking the downlink frequency of the transmitting base station does not affect the uplink frequency

※ Applicable places
1. Standardized examination rooms for college entrance examination, adult college entrance examination, self-study examination and various examination rooms, student dormitories, etc.
2. Conference rooms, music halls, theaters, churches, auditoriums, factory workshops, and other facilities of various sizes in government agencies.
3. Detention centers, large, medium, and small prisons.
4. Courts, courtrooms, trial halls, etc.