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Product name: 6-Antennas Desktop Cellular Phone Jammer Blocker 2G/3G/4G Jammer

Product specifications:
Product No.: NT-CJ06-D
New Mobile Phone Signal Jammer Blocker 2G/3G/4G Jammer
Isolating signal bandwidth:
- 851MHz - 894MHz
- 925MHz - 960MHz
- 1805MHz - 1990MHz
- 3G: 2100MHz - 2170MHz
- 4G Wimax: 2345MHz - 2400MHz
- 4G LTE: 725-770MHz  

Antenna: 6 x omni-directional antennas
Shielding radius range: up to 50 meters (depending on the mobile service provider's network condition and background signal strength)
Power supply: AC adapter (AC 220V-DC 12V)
Total output power: 15 watt
Color: black
Dimensions: 305x140x51mm
Weight: 3.5kg
Suitable for: police and meeting room, security services, military units, prisons, banks, churches, conference rooms, classrooms, secret services, news conference rooms, libraries, museums, customs, houses and car

Use notes:

Be sure to connect all the antenna before the power supply is switch on
When you get the device in the first time, recharge the device only after the power is used out
To prolong the lifespan of the device, try to recharge it no less than 12 hours
Any sealed mark on the machine teared are void, excluding from the repaired service
Don't put the jammer in the water and fire to avoid using in the bad, condition of over-wet, over-hot, high voltage and high magnetism
Antenna shall be used vertical to the ground, working more efficiently

Packing including:

one jammer host
AD/DC adapter

Detachable antenna x 6

LINK: Made-In-China