Product Description Cover interface standards:Frequency A--All cellular signalCDMA800: 850-894MHzGSM900: 925-960 MHz,GSM1800: 1805-1880MHz,GSM1900: 1920-1990MHz3G: 2110-2170MHz,Frequency B--Europe Cellular phone+GPS+WIFI.GSM900: 925-960 MHz,GSM1800: 1805-1880MHz,3G: 2110-2170MHz,GPS L1: 1500-1600MHz,WIFI: 2400-2500MHzFrequency C--America Cellular phone+GPS+WIFI.CDMA800: 850-894MHzGSM1900: 1920-1990MHz3G: 2110-2170MHz,GPS L1: 1500-1600MHz,WIFI: 2400-2500MHz.You can select ANY ONE of above frequency bands you need in a jammer, and we also provide ODM&OEM service.Total output power: 12WJamming range: Radius up to 40m, The jamming Radius still depends on the strength signal in given areaAdjustable output power, each band can be controlled separately and simulatneously.Working time: May continue to work 24/ 7External Omni directional AntennasAll the TX frequency covered down link only.Dimension: ( L * W* H): 200*165*60mmFull Set Weight: 2.8KGFeatures: It can be applied at meeting room, conference room, museum, gallery, theatre, concert hall, church, temple, restaurant, classroom, training center, factory, bank, train, bus, etc. For some locations of special purpose such as hospital, gas station, etc., please do field test first to make sure no interference happened to the normal operation of their equipment and instrument. It is easy to install and operate the device.