Product Description
   The product that you are viewing is the advanced intelligent cell phone jammer, of which is the name is 5W Cell Phone Signal Jammer with 25m blocking range  and owns powerful ability. Want to know more about it, just have a look at the following text. This intelligent cell phone jammer is a two-in-one device which not only has the function of the cell phone jammers but also has the function of the cell phone signal detector. And then you can have a look at how is this signal detector and jammer works and you will find it can detect and block both the 2G 3G mobile phone signals.
   This signal detector and jammer made up of three parts the Mobile Phone Signal Detector, Mobile Phone Jammer and the Digital Control Box. And applying the inspection function(average 50ms interval scanning time) of the cell phone signal detector, in the special situation if someone use the cell phone to make phone calls, the mobile phone signal detector will immediately detects the signal and then start the Digital Control Box, then cell phone signal jammer will be turned on to block the cell phone signals within its jamming range continuously for two minutes(mobile phone signal detector stops work when the mobile phone jammer works). And then after 10 seconds the mobile phone signal detector will back to detect the signals again, in this way the goal of real-time detection, intelligent shielding effect can be easily reached.
   Such an intelligent cell phone jammer is suitable to be used in places such as the prisons, detention centers, detention room, government agencies, large and small conference rooms of various categories, concert halls, theaters and situations such as the college entrance examination, adult college entrance examination, self-examination and various tertiary institutions and also suitable for long-term unfavorable place phone calls and so on. If you are in need of one, just come here to pick up one. If want to know more details and specifications of this signal detector and jammer, just have a look at the following specifications.
Specifications
Cell Phone Signal Detector
Detector Frequency:
-CDMA: 824-849MHz
-GSM: 890-915MHz
-DCS: 1710-1785MHz
-PCS/3G: 1920-1980MHz
Available system: world wide cell phone network
Each frequency band has a corresponding antenna, so there are 4 antennas on the equipment.
Antenna: 4pcs ( Please fix the antenna follow the mark in the unit) 
Power supply: AC adaptor,(AC 110-240V   DC5V)
Range of the signal detector: 1-15M (It still depends on the strength signal in given area) Environment Temperature:-20°C ~ 65°C
Relative humility:30% ~ 70%
Dimension:230*85*30mm
Weight:800g
Cell Phone Signal Jammer
Isolating Signal Bandwidth:
-CDMA (850-894MHz)
-GSM (925-960MHz)
-DCS (1805-1880MHz)
-PHS (1920-1990MHz)
-3G (2100-2170MHz)
Available system: world wide cell phone network
Power supply: AC adapter(AC110V-240V  DC5V)
Operate time: 12 hours continuous
Antenna: 5pcs ( Please fix the antenna follow the mark in the unit)  Power consume:5W
Shielding Radius: Up to 25 meters (signal strength <= -75dbm, depends on the signal strength in the given area)
Working Temperature: (-10)-(+55) Degree Celsius
Weight:1.5kg
Dimension: 245(L)?85 (W)?30(H)mm
Digital Control Box
Power supply: AC adapter(AC110V-240V  DC7V)
RXD IN:9600 bps RS485
RXD OUT: 10/100Mbps RJ45
Working Temperature: (-10)-(+70) Degree Celsius
Accessories
Mobile Phone Signal Detector
Mobile Phone Jammer
Digital Control Box
Power Cable