2G+3G+4G Signal Blocker For Sale
2G+3G+4G cell phone jammer is a high-tech product carefully developed according to the actual situation of mobile communication at home and abroad. It can block 2G+3G+ within a diameter of 1-25 meters (usually about 10-250 square meters) 4G and other mobile phone signals and wireless signals make it impossible for mobile phones in the area to make and receive calls, and will not interfere with the work of other electronic devices in the environment. When the mobile phone is far away from the shielding range, it can resume normal use.
Features
1. Large-scale coverage of 100-200 square meters (-75dBm, indoor transparent environment, depending on the distance of surrounding base stations)
2. High power 30W (single channel 2-4W) can effectively shield three networks 2G 3G 4G mobile phone signal and WIFI signal
3. Equipped with a precision voltage regulator circuit, it can be used normally even when the voltage fluctuates greatly
4. Original chips and circuit boards ensure efficient and stable performance and long life
5. Simple appearance, small size, less space occupied
6. Easy and convenient installation
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