Specifications: (A)TX frequency: 851 ~ 960 MHz (B)TX frequency : 1805~ 1990 MHz (C)TX frequency: 2100 ~ 2170 MHz Cover interface standards: Digital: IDEN, TDMA, CDMA, GSM, UMTS Analog: AMPS, NMT, N-AMPS, TACS Total output power: (A) +25 dBm / 300 mW Total output power： (B)+25 dBm / 300 mW Total output power： (C)+25 dBm / 300 mW Battery: NI-H battery DC 12V / 1600mA / H Signal Source: PLL synthesized Antennas: External Omnidirectional Continue using time: 90 minute First time battery charge need 2 hours up. Jamming range: Radius 8~ 10 M【the Cellular signal must ≥-85 dBm 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) Can OEM or ODM for specially request Dimension: 110(H) ? 62(L) ? 30(D) mm not include antenna Weight: 300 g