https://www.jammermfg.com/wifi-jammer.html This is an adjustable power GSM 3G Frequency jammer that allows users to control the output power of each frequency band and adjust the jamming radius according to individual needs. This high-performance 3G signal jammer can also shield mobile phone signals such as CDMA/DCS/PCS/GSM/3G individually or simultaneously, with an excellent cooling system, it can work continuously throughout the year without generating high temperature, and the interference performance is very remarkable. In addition, the desktop design of the 3G signal blocker is equipped with a high output power of 70W, which can block mobile phone signals with a maximum shielding radius of 100 meters according to the signal strength of the area of ​​use. https://www.jammermfg.com/70w-high-power-adjustable-desktop-CDMA-DCS-PCS-GSM-3G-frequency-jammers.html