Introduction SK-4 cell phone jammer is a kind of information security product used for blocking cell phone signal around users. It is more and more popular in the security productí»s market currently. Cell phone jammer causes enough interference with the communication between cell phone and stations to render the phones unusable. SK-4 cell phone jammer can stop all bandwidth frequency from 800 MHz-2400 MHz within around 20 meters, such as GSM, CDMA, DCS, PHS, 3G, Interphone, Wireless camera, etc. The cell phone jammers are now a necessity for law enforcement and the military to interrupt communications by criminals and terrorists, and also for accomplishing a more cultured society. Output Frequency CDMA 870-880 MHZ GSM 930-960MHZ DCS 1805-1850MHZ PHS 1900-1925MHZ 3G 2110-2170MHZ Range: Approx. 0.5-20 meters Weight: 0.8kg Dimension: Product: 20*14*5cm, Package: 30*16*6cm External Power RF Power: 200mA Output Power: 300mW Power Adapter: Input AC160V-240V Power Source: DC 5V Relative Humidity: 20%--95% Working Temperature: -40~ +55 deg C
