working range: 10m detecting frequency range: 100-5800MHZ power consume:100mW EST-101D Detector of Wireless signal (The opponent of cheating) Introduction of operation I. Origin of Product There are more and more cheating phenomena by using wireless earphone in some examination . The cellphone jammer can not shield the signal, because the frequency of the wireless earphone is too weak..(Some jammers can isolate the interphone which is located out of the exam room, that way can not solove the problems completely.)Through deep analysis of the wireless earphone , it is developed the rwireless signal detector by our R&D team. It can detect the signal of the wireless earphone specially, help the teachers to get the cribber. So that we can vindicate the discipline and justice of the examination. EST-101D  Detector of the wireless earphone can detect the exact position of the wireless earphone and capture the cheating behaviors in the radium range between 10 to 15 meters.The veracity has achieved 95% in experimentation. It is widely used in mustifarious examination. II. Features 2.1 It can detect the various wireless earphone exactly.2.2 It can detect and posite various communication equipment (cellphone, interphone, high-power transmitter inner car, dictagraph, wireless pinhole camera, wireless video communication equipment, homemade communication equipment, radio etc.)2.3 Inductive & passive detecting technology, it has nothing radiation.2.4 It is made up-to-date paste components and intergrated circuits with advanced performance, it is low power and can work continuously for a long time.2.5 With intellingent analysis software inside, it can alarm exactly and in time.2.6 The software can apgrade to suit the further requirement.2.7 It can increase the intensity of the signal and and get the slender signal exactly.2.8 With inimitable circuit which can manage the close signal in the equipment, we can get the exact orientation in crowd.2.9  8 indicators to show the intensity of the signal2.10  With vibrancy and buzzer function2.11  Listen to the conversation of the wireless phone by earphone  III Instruction       3.1 Power on      Turn on the power button on the left. ( Turning it up means vibrant alarm, turning it down means audio alarm.) When the Green indicator is on, you can enlongate the detecting antenna, then the detector can work.  3.2 Be sure that there is the fountainhead existed or not.     Make yourself to be the centre of the circle, and go around the area by 360°. If the signal lights are still off , there would not exist the fountainhead of the signal.( If the signal lights of level 1 and level were on and off  discontinuous, there s may be the other signals which are different from this one. So we dont pay attention to them.)3.3 Make sure the direction of the signal.     When the signal lights of level 1 and level 2 are on steadily, and then the signal lights of level 3 and level 4 are on, you can keep the directionj of the detecting antennas, and go straight to the direction. If the 4 signal lights are still on steadily, you can sure that the direction is the one you are going to.  3.4 Make sure the position of the signal s fountainhead.     After making sure the direction of signal, you can shorten the detecting antenna and go straight to the signal s fountainhead. You can make sure the exactly position of the signal when the detecting antenna was shortened into the equipment, and the 4 signal lights were still on. IV.  Strongpoints  4.1 Small volum, easy to take, can be put in the pocket, with nothing influence to the examination.  4.2 Easy to operate, 3 buttons for on and off (on with vibrant alarm, on with audio alarm, and off )  4.3 The veracity has achieved 95%.  4.4 The detector can work continuously 10 hours or above without changing battery. Theres a charger in the packaging.  4.5 The detector can be used for a very long time.  4.6 Show the distance to the signal. (More lights on, much nearer to the signal.)  4.7 The wquipment which cant send the electromagnetic wave is used to detect the signal, so it wont disturb any wireless communication equipments. And it has nothing baneful radiation to the health. V. Technical parameters  5.1 TX : 0.1GMHz 5.8 GMHz  5.2 Power supply : 4V  600Ma  5.3 Detecting range : Radius 0.5-15 M  5.4 Color :  Make the color as customers requirement  5.5 Distinguish of direction : <±15°  5.6 Statoscope : 6db  5.7 Dimension : 96*58*24 mm  5.8 Weight : 50g  5.9 Working environment     Temperature : -40°C ~ 50°C     Relative humility : < 80% VI. MaintenanceThe wattanty period is One year. It is repaired free of charge for Three years and maintained for life. (Except the factitious reason.)

EST-101D Detector of Wireless signal (The opponent of cheating)