4 Antennas WIFI Cell Phone Signal Jammer with 20W Output Power and 70m Jamming Range

The U-JB20 is a high-performance desktop signal jammer designed to effectively block 2G, 3G, 4G, and WiFi signals in examination halls and other sensitive environments. With 20W output power and four dedicated antennas, this device provides reliable signal disruption within a radius of up to 70 meters.

Ideal for use in theatres, offices, meeting rooms, oil and gas facilities, hospitals, recording studios, banks, contract tendering rooms, churches, conference rooms, classrooms, testing facilities, security services, military operations, secret services, libraries, museums, courts, border patrol, drug enforcement, customs, houses, mosques, and prisons.

Power Supply: AC110-240V, DC 5V/12A

Energy Consumption: 60W

Dimensions: 45×24×8.5cm

Weight: 3.5kg

Output Power: 20W

Jamming Range: 2-50m radius (depending on local signal intensity)

Operating Temperature: -10°C to +55°C

Humidity: 5% - 95%

Antennas: External omnidirectional antennas