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Silvery 3G 2G Cell Phone Blocker with 30M Jamming Range for Examination Rooms and Classrooms

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Silvery 3G 2G Cell Phone Blocker with 30M Jamming Range for Examination Rooms and Classrooms
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Features
Specifications
Total Output Power: 8 Watt
Power Supply: AC 110-240V, DC 5V/8A
Air Pressure: 86-106 KPa
Weight: 1.56 Kg
Power Input: AC 110V-240V
Jamming Range: Radius 1-30 Meters (depends On Local Signal Strength ≤ -85dBm)
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Basic Infomation
Place of Origin: China
Brand Name: UND
Model Number: U-JF
Payment & Shipping Terms
Delivery Time: 5-8 days
Payment Terms: T/T
Supply Ability: 100
Product Description
Classroom Silvery 3G 2G Cell Phone GPS Signal Blocker
Professional signal blocking device designed for examination rooms and classrooms to prevent unauthorized mobile communication during critical testing periods.
Technical Specifications
TX Frequency:
CDMA: 850-894MHz, GSM: 930-960MHz, DCS/PHS: 1805-1990MHz, 3G: 2110-2170MHz
Supported Systems:
Analog (AMPS, TACS, NMT) and Digital (GPRS, GSM, DCS, CDMA, PDC, TDMA, PHS, PCS, IDEN, W-CDMA, UMTS), 3G
Single Output Power:
+33dBm / 1W
Power Input:
AC 110V-240V
Jamming Range:
Radius 1-30 meters (depends on local signal strength ≤ -85dBm)
Safety Regulation:
AC Adapter UL (E190582), CSA (LR112971 Level 3)
Dimensions:
320(L) * 270(W) * 110(H) mm (excluding antenna)
Weight:
1.56 kg
Operating Temperature:
-40°C to +55°C
Relative Humidity:
≤ 90% RH
Air Pressure:
86-106 kPa
Key Features
  • 4-channel design effectively blocks mobile signals from CDMA, GSM, DCS, and PHS systems
  • Selective signal blocking - only affects mobile phones without disrupting other electronic devices
  • Optimal performance when used more than 200 meters from base stations
  • Stable long-term operation with continuous use
  • Slow start-up circuit prevents sparking from mechanical switching
Applications
  • Educational facilities: classrooms, examination rooms, libraries, auditoriums
  • Public venues: conference rooms, cinemas, theaters, hospitals
  • Safety-critical areas: oil stations, gas stations, oil fields, fuel depots
  • Secure facilities: government buildings, military installations, financial institutions, police stations, command centers
Detailed Performance Specifications
Output Port Frequency Average Output Power Output Power
CDMA800 851-894MHz 35dBm 2W
GSM900 925-960MHz 35dBm 2W
DCS1800/PCS1900 1805-1880MHz/1930-1990MHz 33dBm 2W
3G 2110-2170MHz 33dBm 2W
GPS (Optional) 1570-1580MHz 33dBm 2W
WIFI (Optional) 2400-2500MHz 33dBm 2W
Total Output Power:
8 Watt
Power Supply:
AC 110-240V, DC 5V/8A
Power Consumption:
25 Watt
Complete Accessories:
Four omni-directional antennas, Power cable, Remote control, Fixed Mount
Note: This device only interferes with the downlink frequency of mobile systems and does not affect the normal operation of base stations.
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Tel : +8613991372145
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+8613991372145
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