8 Antennas 20W Adjustable Output Signal Jammer Cell Phone Blocker for 3G 4G WiFi GPS

20w 8 Antennas 3G 4G High Power Signal Blocker With Adjust Button for 24 Hours Continuous Operation

This multifunctional 2G 3G 4G cell phone signal jammer and WiFi blocker is designed for fixed installations in conference rooms, auditoriums, courtrooms, libraries, exam rooms, schools, cinemas, theaters, hospitals, and similar environments. It simultaneously blocks WiFi, Bluetooth, 2G, 3G, and 4G signals.

Featuring 8 antennas, this high-power multifunctional WiFi 4G mobile jammer effectively cuts off CDMA, GSM, DCS, PCS, 3G, 4G, WiFi, and Bluetooth signals with a jamming distance of up to 20 meters, depending on local signal strength. The advanced cooling system ensures optimal working conditions for 24/7 nonstop operation. The adjustable button allows you to fine-tune output power for each frequency band, enabling precise jamming range control without affecting surrounding areas.

This product can be directly screw-fixed to walls or ceilings. Maintain distance from low-heat-resistant objects during installation.

Optimal Installation Height: 1.0-2.0 meters for best effect

Power Connection: Connect the power plug directly to AC220V power source

• 8 antennas for comprehensive coverage of cell phone signals, GPS signals, and WiFi signals
• Adjustable button for minimizing or maximizing individual frequency bands
• Includes car charger for direct vehicle use
• Advanced cooling system maintains face temperature below 45°C during normal operation
• OEM services welcomed

Suitable for meeting rooms, conference rooms, museums, galleries, theaters, concert halls, churches, temples, restaurants, classrooms, training centers, factories, banks, trains, buses, and similar environments.

Important Note: For sensitive locations such as hospitals and gas stations, conduct field testing first to ensure no interference with normal equipment and instrument operation.

• 1 x Mobile Signal Jammer Master Unit
• 1 x English User Manual (scan file available via email to avoid customs issues)
• AC Power Charger (region-appropriate standard provided based on shipping address)
• Mounting Screws
• Band Specific Antennas x 8
• 1 x Car Charger