Characteristics 1. 6 modules are controlled speparately and also can work simultaneously. 2. Each module with antenna can be used as a single jammer. 3. The pelican case is portable (can be carried like a suitcase). 4. Can be fixed in car and temporary occasion. 5. Frequency band is optional. 6. With excellent heat dispersion. The Portable Multi band Jammer can be constructed to jam up to Six frequency bands: 450-470Mhz, 850-894Mhz,925-965Mhz,1805-1880Mhz,1920-1990Mhz, 2110-2170Mhz simultaneously, and has a maximum overall RF output power of 320 watts. The jammer can operate either with its specially designed 10dBi internal directional (planar) high gain antennas, or optional 7dBi or 8dBi external omni directional type high gain antennas according to User requirements: Great Strength RF Power Wide Blocking Area Remote Control Function 1) Perfect Alarm System 2) Self Diagnostic Function Easy & Simple Maintenance by Separate module design Apply to " No-Break Power Function " in Blockade System 1) Automatically convert to Battery Power mode when AC Power Off ( Min 2hours operating by Battery Power ) A "Smart active" cooling system enables unlimited continuous use. The system has a fully protected circuit in case of disconnection of antennas. The sturdy trolley type attached case enables ease of mobility. The jammer is designed for easy installation and use. Simply attach selected antennas and operate from the jammers Outside batteries, or plug into either AC mains or DC power source and start to operate. All operational switches and check leds are externally installed.