Product Name: High Power Wireless Cellular Signal Blocker Cell Phone Jammer Model NO.: WT-B4S Application: Library Frequency: 700/850/900/1800/2100/1900/2300/2400/2600MHz etc Frequency Range: 2g/3G/4G Channel Quantity: 4 Bands Voltage: AC110-240V to DC5V Power Output: Total 18W,4-5W Each Band Jam Radius: 5-50meters Cooling System: Aluminum Materials with Inside 2PCS Cooling Fans Net Weight: 4kg Dimension: 21*5*17cm(Without Antennas) Working Time: Non-Stop Working Temperature: -30 to +60 Degree Warranty: 1year MOQ: 1PC Trademark: Wingstel Transport Package: Carton Box Specification: 18W Origin: China HS Code: 8543709990 Product Description Product Information Name:High power wireless cellular signal blocker cell phone jammerModel: WT-B4SFeatures4 bands indoor jammer, Jam GSM CDMA DCS 3G or 4GLTE WIFI.Output power total 18w,Shielding 5-50m,Still depends on the strength signal in given area. Big aluminum alloy shell and 2 cooling fans , not-stop to work,Each of 4 frequency module/band is separate, Easily for maintenanceLED indicator lights display power supply,Key specifications:WT-B4SChannel Output PortFrequency rangeAverage out-putting power1CDMA or GSM851-894 or 925-960MHz38dbm / 5W2DCS/PCS1805-1990MHz36dbm / 4W33G2110-2170MHz36dbm / 4W44GLTE700-803 or 2500-2690MHz38dbm / 5WPower supply: AC adapter 50 to 60Hz, (AC110-240V to DC5V)Dimension: (width, height, length) 210 x 50 x 170mmPackage Size: 47*27*15cm N.W: 3kg G.W:4.0kgTotal Power:18W Shielding Radius: (5-50) meters@-75dBm.Still depends on the strength signal in given area. The shielding radius of VHF/UHF signalshould be lesser than cell phone signal.Warranty: One year from delivery date.OEM Customized ServiceFrequency Range can be customized: 4GLTE Wimax, Wi-Fi 2.4G,5.8G,3.6GHz, GPSL1-L5 and moreSilkscreen OEM service can be offered.Package contents:Jammer Host x 1pc,AC adapter x 1pc,antenna x4pcs,remote control x1pcIt can be applied at meeting rooms, conference rooms, museums, galleries, theatres, concert halls, churches, temples, restaurants, classrooms, training centers, factories, banks, trains, bus and more Places that require silence, confidentiality and information securityFor some locations of special purpose such as hospitals, gas stations and more, please do field test first to make sure no interference happened to the normal operation of their equipment and instrument