Product Name: Jet-990 Mobile Phone Intercept System Specifications: The Jet-990 is a tactical off air GSM, AMPS, HCMTS , CDMA , TDMA ,TACS , PCS , Mobile phone Intercept system, designed to intercept all cellular telephone , This system works as a passive system, intercepting cellular information directly from the air. It is undetectable and does not interfere with the network. Applications acoustic Isolation: Theaters, Cinemas, Concert halls, Lecture room, Libraries, Exclusive Restaurants, Recording studios, Security & Privacy: Prisons, Courtrooms, Conference room, Embassies, Government Facilities, Financial institutions, Casino, Sensitive locations Health & Safety: Power plants, Industrials Plants Specification: 1.Frequency: 860-960MHz 1,800-1,990MHz 2.Jamming signals: GSM, AMPS, HCMTS , CDMA , TDMA ,TACS , PCS , 1.AC adaptor with DC input jack, AC 220V 50/60Hz, DC 5V 2.Output power: 5 W (800Mhz); 5W (900Mhz); 5W (1900Mhz) 3.Weight : 7.5 Kg 4.Dimension: 256mm(W) x 475mm(D) x 120mm(H) 5.Jamming range: radius 10-40m(depend on location) 6.Safety Regulation (For AC-adaptor): UL, CSA, CE, Installation: 1.Take the jammer out of the gift box. 2.Plug in the antenna according to the frequencies. 3.Plug in the AC adaptor and turn on the Jammer. 4.When the LED is on, the Jammer is activated. Important Notice: 1.Before turn on the power; please make sure both antennas are correctly plugged in. Or it may damage the device. 2.The antennas have to plug in according to the frequency to the connector to prevent short circuit.