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SJ128
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Cell Phone Signal Jammer With Coverage 40 ±5 m


model number:SJ-128

Description

Cell Phone Signal Jammer With Coverage 40 ±5 m

 
Just by using this signal jammer the device signals can be easily
blocked within its jamming range. Signal jammers are widely used in
different places, such as school, university, examination room, gas
station, church, court, library, meeting room, government, theater,
military area and so on.

With the help of signal jammers, the cheating problems are solved,
which ensures the equity in exams. When they are applied in church,
court, library, meeting room, theater, they can prevent device from
receiving signals, which maintains absolute silence.

High sensitivity, scope adjustable, large range of detecting frequency
Technical parameters

Effective isolating/shielding diameter: 40 meters ± 5 meters

Isolating signal bandwidth: CDMA: 869-89MHZ, GSM: 925-960MHZ,
DCS: 1805-1880MHZ, PHS: 1900-1990MHZ or 3G: 2110-2170MHZ

Working time: it can work stably for a long time

Environment temperature: -40℃ to +55℃

Relative humidity: 30%-95%

Power adapter: input AC 110V-240V output DC 5V

Switching on, it can work stably for a long time

Slow start-up circuit can avoid sparking caused by mechanical switch

4 channel type can efficiently provide shield for mobile signals from
CDMA, GSM, DCS, PHS and 3G

It only shields the signals from mobile phone and does not affect the
normal operation of other electronic devices

Generally, please use your mobile phone at the places more than
200m away from the base station
English User Manual

No harm to human body or other electronic devices

The jamming distances we mentioned on website are for customer’s
reference only. The actual jamming distance will be varied depending
on the signal strength and the use location and if full charges, etc.

Please dont put the jammer in high voltage and high magnetism
locations

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