The cell phone jammer scans from the low end frequency of the forward channel to the high end at a certain speed during operation. This scanning speed can cause garbled interference in the message signal received by the mobile phone, and the mobile phone cannot detect the normal data sent from the base station, so that the mobile phone cannot establish a connection with the base station. The mobile phone is manifested as the phenomenon of searching the network, mobile phone no signal, no service system, etc.
Different shields can shield different signals, mainly depending on the needs of customers. For example, there are remote control cheating signal jammer, walkie-talkie signal jammers, GPS signal jammers, mobile phone signal jammers, WIFI signal jammers, Bluetooth signal jammers, pinhole camera jammers, etc...
The current mobile phone signal jammers are all full frequency bands. It can shield all the 2G 3G 4G signals, 2.4G WIFI signals and Bluetooth signals under all the three operators of China Mobile, China Unicom and Telecom. Its principle is sent by itself. The frequency interferes with the mobile phone receiving the frequency from the base station and wireless router, so as to achieve the purpose of shielding them. The specific frequency bands are as follows:
1. CDMA frequency band transmission frequency 870-880MHz
2. DCS/PHS frequency band transmission frequency 1800-1920MHz
3. GSM frequency band transmitting frequency 925-965MHz
4. TD-SCDMA frequency band transmission frequency 2005-2035MHz
5. WCDMA/CDMA2000 frequency band transmission frequency 2110-2175MHz
6. 2.4G frequency band transmission frequency 2400-2500MHz
7. 4G1 frequency band transmission frequency 2300-2390MHz
8. 4G2 frequency band transmitting frequency 2550-2660MHz
Mobile phone signal jammer SQ-B08, this product cuts off GPS/2G/3G/4G/WIFI and other signals in a wide range, so that the device cannot receive satellite signals, cannot establish a normal communication connection with the base station, and does not interfere with and block the use of other electronic devices . It is widely used in school examination rooms to prevent cheating, student dormitory work and rest management, office and unit conference room meeting discipline, confidentiality, religious places to keep quiet and solemn, and factory workshops to improve production efficiency and reduce work-related injuries.
1. Multifunctional 4G model, shielding mobile signals such as 2G, 3G, 4G, 2.4GWIFI Bluetooth.
2. Using high heat dissipation aluminum alloy shell, good heat dissipation performance, sturdiness and durability, to ensure long-term uninterrupted and reliable operation.
3. High-quality switching power supply, stable frequency without frequency deviation.
4. The shielding radius is 1-30 meters (not a fixed value, depending on the distance between the location and the base station)
5. Only shield the mobile phone signal, and does not affect the normal operation of other electronic devices
6. Ultra-low radiation, safety and environmental protection, no adverse effects on human health.
7. Only shielding the downlink frequency of the transmitting base station does not affect the uplink frequency.
The shielding distance of the jammer is not fixed. It is determined according to the local signal environment. The stronger the mobile phone signal, the shorter the shielding distance, and the weaker the signal, the longer the shielding distance. Before you buy, be sure to measure the signal strength of the place you are using it. If you want to block any signal, you can contact us.