Product Name: Cell Phone Signal Jammer RF Power: 20 W Power Supply: AC 160-240V And DC 5V 12A Dimension: 420 X 140 X 40 Mm Net Weight: 2kg Jamming Range: 1-25m 2.4G 4G Interphone Mobile Phone Signal Jamming , Cell Phone Signal Jammer   Product Instructions:        This signal blockers(signal jammer/partition/suppressor/cutter/isolator/conference information confidential machine) is our factory adopts advanced foreign technology, mainly for domestic college entrance examination, adult the university entrance exam, self-study exam and all kinds of colleges and universities in the process of examination, the status quo of some cheating in the use of mobile phones, and at the same time combined with all kinds of intermediate and senior high school students use mobile phones in the present situation of the class time loose hair message,And administration authority, enterprises of all kinds of big small and medium-sized conference room, concert halls, theaters and other places of serious and noisy in the mobile phone brings trouble. According to the actual circumstance of domestic mobile communication carefully developed high-tech products, it can be in 1 to 20 meters radius (50-250 square metre) partition GSM/DCS/CDMA/PHS / 3 g (td-scdma/CDM A2000 / WCDMA) / 4 g mobile phone signal, 2.4 GWIFI wireless signal and radio emission spectrum mvhf136 UHF400-470-167 - m,Answering phone can't play and, the radio can't work normally, but it does not interfere with other electronic teaching equipment, mobile phones and radios leave partition scope, can return to normal use. Also the school a clean, also meeting a better net.   Product Features:   Shielding the GSM/DCS/CDMA/PHS / 3 g (td-scdma/CDMA2000 / CDMA) / 4 g/UHF/HF band Thin shell, the surface can be according to the customer need to stick a card or silk screen logo (free of charge to provide printing services) Transmitted power of 20 w Adjustable effective shielding 1 to 25 meters (debug before delivery)   Product Applications:   It can be applied at meeting rooms, conference rooms, museums, galleries, theaters, concert halls, churches, temples, restaurants, classrooms, training centers, factories, banks, trains, bus and more For 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   Technical Specifications:   Technical Specifications No. Technical Standard Technical Parameter 1 CDMA 870-880MHz 2 DCS/PHS 1800-1920MHz 3 GSM 925-965MHz 4 TD-SCDMA 2005-2035MHz 5 WCDMA/CDMA2000 2110-2175MHz 6 2.4G 2400-2500MHz 7 UHF 400-470MHz 8 VHF 135-175MHz 9 4G1 2300-2390MHz 10 4G2 2550-2660MHz 11 Power Supply Input AC160-240V Output DC 5V 12A 12 Dimension 420 x 140 x 40 mm 13 Weight About 2kg 14 Jamming Range 1-25meters (about 10-250 square meters, can be adjusted according to the required place shielding range) 15 Action Type All mobie Phones(2G+3G+4G)2.4G wifi signal, Interphone, etc. 16 Temperature -10 ~ 50℃ 17 Relative Humidity ≤90% (RH) 18 atmospheric pressure 86-106kPa 19 Positon Both Indoor and Outdoor   Installation instructions:        This product can use screw directly fixed to the wall or ceiling, the product can be up to 50 ℃, the surface temperature so please stay away from the low thermal objects. Installation is high, the degree of: 1.0-1.0 meters. Best installation direction: do not use mobile phone signal shielding device toward the direction mobile base station antennas, otherwise it will affect the use effect. 1), an antenna connection: take mistake proofing design, only can be inserted correctly installed. (note:If electrical power to elements that are not installed antenna, may damage the unit) 2) check the host power switch after the power connection, confirm that the power switch is in the closed position, insert the power transformer output plug into the host left in the middle of the power socket, power transformer input plug connection with AC220V power. Application Place