There are large and small exams in our life, the middle school entrance examination and the college entrance examination, the fourth and sixth grade exams. If there is no signal, the mobile phone naturally cannot communicate with the outside world. In important places such as examination rooms and prisons, cell phone jammer are used to block the signal. cell phone blocker principle is that the frequency of its own communication facilities will interfere with the frequency of the receiving the base station and the wireless router, so as to achieve the purpose of shielding them. The current cell phone jammer is full frequency band, it can block all gsm 2/3/4/5G signals and 2.4/5.8G WIFI signals and Bluetooth signals under all communication operators. Now important exam rooms need cell phone blocking device to prevent candidates from contacting the outside world through wireless signals. The use of unauthorized aids such as mobile phones, smartphones, tablets, wearables or similar in exam situations is considered an attempt at cheating.įor some time now, auditors have been increasingly observing a remedy through the use of so-called mobile phone jammers.Ĭell phone signal jammer have become standard in important places such as exam rooms/prisons/churches/governments. The problems in exam situations are well known. The application of cell phone jammers in important occasions Since the interfering signal and the communication signal are transmitted on the same frequency, they will cancel each other out, resulting in the mobile phone not being able to receive the signal from the base station. The specific working principle of the cell phone blocker is to use electronic circuits to generate electromagnetic signals of a certain frequency, which will interfere with the communication signals between the mobile phone and the base station. These interference signals include electromagnetic waves or microwave signals, which can interfere with the wireless signal transmission between the mobile phone and the base station, so that the cellphone cannot be used normally. The phone jammer will send interference signals to the mobile phone, so that the it cannot receive and send signals normally. The wireless communication signal between the cell phone and the base station is based on radio frequency (RF) technology. The mobile jammer (also known as cell phone signal blocker) is to use the principle of electromagnetic interference to prevent wireless signal transmission between cellular phones and base stations. This article will give you a detailed introduction to various information about cell signal jammer. While it brings convenience to people, it also brings The expected disadvantages have resulted in the cell phone killer - mobile phone jammer. However, GSM cell phone are a double-edged sword. Mr.In 2023, when cell phones are popular, mobile phones have shortened the distance between people and brought great convenience to people.7 Days One to One Exchange if the Goods Are Damaged in Shipping.Prevent Car of Government, Intelligent Agency, Famous Person, Principle Rented Car and Lent Car From Being Tracked. Meeting Rooms, Conference Room, Auditoriums, Law Court, Library, Exam Room, School, Cinema, Theater, Temple, Hospital.Government, Military, Finance, Security, Police and Command Center.Pls Take Note This Product Is Not Support Can Simultaneously or Individually Jamming Six Different Frequencies, You Can Block Different Bands as Needed.Support Jamming Operators Signal Celco*, Dig*, Maxi*, Onexo*, Umobil*, Redon*, Tunetal*, Unif* Mobile, Yoodo*.Inside Cooling Fans and Heat Sink Design Ensure the Device to Work Continuously.Support Jamming 2g, 3g, 4g, Gps, Wifi, Gsm, Cdma, Dcs, Pcs.Jamming Distance Up to 3 ~ 10 Meters Workable.This Mobile Jammer Can Effectively Jamming 2g, 3g, 4g, Wifi Mobile Phone Signals, Gps Satellite Positioning Tracking, to Protect Your Whereabouts of Privacy and Confidential Information. As a Result, a Cell Phone User Will Either Lose the Signal or Experience a Significant Loss of Signal Quality. Mobile Jammer is a Device That Blocks Transmission or Reception of Signals, Usually by Creating Some Form of Interference at the Same Frequency Ranges That Cell Phones Use.
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