welcome to HISEA
source:Industry News release time:2021-08-09 Article author:sznbone Popular:Prison Jamming system
When taking large-scale exams such as the high school entrance examination, college entrance examination, grade four and six, you will see signal jammers in the examination room. It can be seen that signal jammers have become standard equipment in school examination rooms, as long as it is to prevent candidates from using mobile phones to cheat.
We know that today's mobile phones have too many functions, which can be used to watch movies, record recordings, video chats, take pictures, etc. At the same time, it is convenient, and some people use mobile phones to cheat, leak questions, and search for answers on the Internet. This is very bad. In order to prevent this kind of on-site occurrence, the examination room began to use signal jammers to shield the signal of the mobile phone to prevent this kind of cheating.
Why can signal jammers prevent mobile phone cheating?
In the examination room, when using a mobile phone to send a message, it is necessary to use a signal to transmit the message. If the mobile phone has no signal, there is no way to receive and send the message. The signal blocker is a device that can prevent the mobile phone from receiving the signal. Turn on After the signal jammer, the mobile phone will lose contact with the base station, and the signal will be completely lost within the shielding range.
The principle of the signal jammer is that the frequency emitted by the jammer itself interferes with the normal frequency of the mobile phone receiving the base station, making the mobile phone unable to connect to the base station, and thus unable to make calls, receive and send text messages, and surf the Internet normally. In recent years, cheating on mobile phones has occurred in various national examinations, which has seriously affected the fairness and impartiality of examinations. For this reason, the state stipulates that mobile phone signal shielding devices should be equipped during major examinations to create a healthy and fair examination environment for candidates.
Read recommendations:
High Power Handheld Signal Jammer HS-P8J
10 Bands Portable Wi-Fi Bluetooth 3G 4G 5g GSM 500W High Power Signal Jammer
Protek A734 100kHz-4.4GHz Handheld Spectrum Analyser
Relationship between 5G millimeter wave and jammer
Jio Estonia partners with University of Oulu on 6G research
Why is there no signal on the mobile phone during the college entrance examination?
Popular recommended products
Related Information
Wifi jammer affecting factors on the shielding radius
2021-06-17Ericsson launches Canada-designed 5G system
2025-06-10Some prisons abroad also implement cell phone signal blockers, prohibiting the use of cell phones in
2021-05-20Protect Voice Security-Recording Jammer
2020-12-14The development of signal jammers
2021-06-11Enrollment exams need test signal jammers to maintain order
2020-11-20The Status Quo and Misunderstandings of Prison Mobile Phone Blockers
2020-09-25Can't prevent recording? Record jammer to prevent recording?
2020-12-14Portable multi-purpose WiFi 4G mobile phone jammer
2020-11-06RF signal jammers: types and characteristics
2021-05-27India Government reverses policy: allows defence forces to procure jammers
2021-12-18The gap between ordinary mobile phone signal shielding device and high quality shielding device
2020-10-26Vehicle GPS signal shield, will affect the mobile phone network signal?
2020-10-26principle of wireless mobile phone signal jammer
2021-04-09The basic process of establishing prison cell phone jammer system
2020-11-05Vehicle GPS signal jammer
2020-12-28The role of drone jammers
2020-12-15These places must be equipped with signal jammers!
2021-08-10Advanced jammers can block multiple types of networks at the same time
2021-05-15Cell phone jammer prevents the use of cellphones in learning
2021-12-03Interfering products
Handheld Listening Device Detector Solution
2026-08-14V500 Rack-mounted Spectrum Analyzer
2026-03-16SSA3000X Plus Series Desktop Style Spectrum Analyzers
2025-04-09HSA-Q1 Handheld RF Spectrum Analyser up to 13.44 GHz
2025-04-09Protek A734 100kHz-4.4GHz Handheld Spectrum Analyser
2025-04-09Low-altitude defense drone portable equipment
2023-11-20Mobile Phone Cellular Signal Booster GSM PCS Network Repeater for Garage Basement Signal Repeat
2023-11-092W Mobile Phone Signal Repeater 1800 2100 2600 MHz Tri-Band 33dBm Network Booster
2023-11-093G Signal Repeater Mobile Phone Signal Booster
2023-11-09Portable Signal Jammer Full Band 21 Channels 2g 3G 4G 5g Mobile Phone Network Lojack Walky Talky Signal Jammer
2023-11-01Professional all-round 360-degree recording jammer air purifier type anti-recording equipment
2023-11-01Anti Spy Remote Control Portable Audio Voice Recording Jammer up to 2m white noise to Privacy Protection
2023-11-01Recording blocker protect your voice information security,air purifier type anti-recording equipment
2023-10-312000m Detection Handheld Drone (UAS) Detection Warning Instrument Detector Dji, Autel and Fpv Drones
2023-10-27Handheld Drone/Uavs Detecter for Detecting Dji/Autel/ Fpv Drones up to 2km
2023-10-25with 2km Drone Controlled Signals WiFi Drone Signal Jammer GSM 900MHz WiFi 2.4GHz 5.8GHz Anti Drone System
2023-10-25Unique Handheld 28 Bands 27 Antennas Wi-Fi6e FM Radio GSM 3G 4G 5g Mobile Phone Jammer
2023-10-23Handheld 24 Antennas 5g Cellphone Signal Jammer with Nylon Cover
2023-10-23Convoy 12 bands RCIED Bomb Jammer
2023-10-23Vehicle Mounted Drone Detection Jamming Integrated Uav Detection, Positioning, and Countermeasures Blocking Units
2023-10-17Portable Drone Detector aeroscope mobile works offline or online can find controller pilot position detection device up to 10km
2023-10-05Vehicle Use-Signal jammer detector for uniform services
2023-09-20Anti-Theft Jammer Detector for Local Command Center
2023-09-20Portable Cellphone Jamming Detector
2023-09-19M8000 RF Signal Detector Anti Spy Tracker Wifi Camera GSM Audio Bug Sweeper
2023-09-188km Ku Band Microwave Alarm Security System Ground Surveillance Monitor/Detector/Sensor/Radar
2023-07-31Full Band Drone Jamming and Navigation Spoofing
2023-07-318kms 300MHz~6GHz RF Uav All Frequency Detection Direction Finding Equipment
2023-07-311.2G 100W module
2023-07-211.2G 50W Jammer Module
2023-07-21Start a conversation to know more about what we have for you…
Get in touchEnter your email for exclusive offers and information on new upcoming products.
product
solution
about us
service
news
