2-Channel Portable Cell Phone Signal Jammer for 2G/3G Blocking

This advanced 18-band handheld portable signal jammer features an innovative 18-antenna design with dual-band channels (12/13, 15/16) to eliminate mutual interference. It effectively blocks 5G, 4G, 3G, 2G cell phone signals along with LOJACK, GPS, and Wi-Fi RF bands. With 18W output power, the jamming range reaches 2-25 meters (at -75dBm, depending on local signal strength). The unit includes a built-in 12000mAh battery providing 2 hours of continuous operation, three integrated cooling fans with an enlarged heat sink for superior thermal management, and DIP switch controls for independent band activation. Ideal for meeting rooms, classrooms, churches, banks, vehicles, and other security-sensitive environments.