Specification: TX frequency: 851 / 869 ~ 894 MHz TX frequency : 925 / 935 ? 960 MHz TX frequency: 1805 ? 1930 / 1990 MHz TX frequency: 2100 ~ 2170 MHz Cover interface standards: Digital: IDEN, TDMA, CDMA, GSM, UMTS Analog: AMPS, NMT, N-AMPS, TACS Total output power: Hi 12W (800: 3W, 900: 3W, 1805-1990: 3W, 2100-2200: 3W) Total output power： Low 6.0W (800: 1.5W, 900: 1.5W, 1805-1990: 1.5W, 2100-2200: 1.5W ) Signal Source PLL synthesized Antennas 8 dBi omnidirectional Continue using time: 90 minutes Every band frequency can select output power Hi & Low by Dip SW All the TX frequency covered down link only. Automatic power switching power supply: 50 / 60 Hz / AC 100 ~ 240V transmitting to DC 24V. Jamming range: Radius 75 M【the signal must ＜-80dBm in the location】The jamming radius still depends on the strength signal in given area Safety regulation: AC Adapter UL ( E190582 ), CSA ( LR112971 Level 3 )