Without power supply, please connect external power supply.
Stop single signals on the GSM, CDMA, DCS, PCS, GPS or 3G bands without interrupting any other electronic device. Users can turn the device on and off for instant jamming and unjamming. Also included is sensitivity control for partial and selective blocking of any mobile phone signal.

Control turn on/off and adjust output power by hand. Taking use of technology of interference superhigh frequency. High effective channel power with rater big semidiameter of interception.
Effectively making subsections, just interferencing downlink and causing no interception of base station.

Mainly used in the area of big prison, big ground, battalion as well as illegal congregation, illegal demonstration, military rehearse, special action etc.