18w Power Mobile Phone Blocker Jammer Long Distance With 3 Cooling Fans Inside

Discover the powerful 2.4G 5.8G Cell Phone Signal Jammer with 20 Watt omni-directional antennas. This 8-band adjustable device blocks all mobile internet users within a 40-meter radius, including 4G connections. Perfect for securing large buildings, it features a robust cooling system and customizable frequencies.