—Efficient device to guard against remote-control bombs This device adopts our new and unique signal jamming technology, which possesses independent intellectual property, to interfere various existing remote-control signals and to prevent remote-control bombs from being activated, in order to ensure the safety of very important persons and venues, and explosives-handling experts. Features: ÇIntegrated main equipment, battery, and antennae increases mobility of the device; ÇWideband whip antenna adopts humanizing antenna design making it easy to be carried and installed; ?Different frequency bands can be controlled independently by different switches; ?Local or remote operation mode can be selected based on actual environment; ?AC or DC power supply can be selected; ?Independent battery box connecting to main equipment by hasps can be charged on-board or independently; ?Low battery alarm alerts users to charge battery or switching to AC power. Applications: ?Prevent remote-controlled explosives from being activated and stop terrorists?attacks; ?Protect explosives handling experts; ?Protect important places such as bus/train stations, plazas, schools, mass gatherings, sports events, etc;