Explosion-Proof Type Mobile Phone Signal Jammer

Features It can be applied at prison, oil field, museum, gas station, military base, security protection etc. please do field test first to make sure no interference happened to the normal operation of their equipment and instrument. It’s easy to install and operate the device. Technical Specifications Blocker All: GSM,CDMA,PHS,PCS,DCS,3G Isolating signal frequency: - CDMA: 850-894MHz - GSM: 925-960MHz - DCS: 1805-1880MHz - PHS: 1900-1930MHz - CDMA1900: 1930-1980MHz - 3G:2110