2G/3G/4G/5G/WiFi Desktop Signal Shielding Isolator/Jammer/Blocker/scrambler: ZDSI-109 is High-power desktop signal jammer with 9 antennas, this jammer can cover around 200 square meters, And the jamming distance(coverage) is depending on the surrounding signal strength, the jamming radius can reach up to 15 meters.
- Application: main for school examination, government, trial room, presion, meeting room,etc.

- Jamming signal: 2G/3G/4G/5G/WiFi
- High gain Antenna Integration with 9 Omnidirectional antennas
- Effective: block signal in seconds
- Concise shape with plastic alloy shell and dissipation chip
- Easy-control switches to select the single frequency to block
- Each antenna with Independent switches for special needs
- Shielding radius 200 square meter (depend on the surrounding signal strength)
Special notes: The jamming distances we mentioned on website are for customer's reference only. The actual jamming distance will be varied depending on the signal strength and the use location and if full charges, etc.