https://www.jammermfg.com/the-latest-10-channel-5G-mobile-phone-signal-jammer-for-office-examination-room.html

Protect your core space with technology:

• Eliminate cheating in exams

• Ensure meeting confidentiality

• Maintain a fair environment

Military-grade shielding performance:

• 10-channel full-band coverage (2G/3G/4G/5G/WiFi/GPS)

• Single-channel 5W output power, total power 50W

• 5-40m intelligent radius adjustment

Extremely concealed design:

✓ Environmentally friendly white shell

✓ No external antenna design

More products: https://www.jammermfg.com/cell-phone-jammers.html