In modern times, with the development of high technology, more and more spy devices emerged as marsh, which is a large threaten to confidential occasions.
Target at the special needs of safe and classified small places like confidential office, destine, running vehicles, guard sites of political and business circles, etc of both home and abroad market, Umibuy.com launches some high tech powerful portable cellphone signal jammers
This great Mobile Signal Detective Jammer can block the mobile signals of GSM/ CDMA/ DSC/ PHS/ PCS/3G (enhanced can shield GPS signal) in a radius scope of 0.1-15 meters (Usually 5-80 square meters). In the block area, cell phone can not take call and receive, but won't interfere the normal working of other electronic devices. If the cell phone is far away from the jammer, it can recover to normal use.