Specifications - Operating Temperature : - 15 degree ~ +60 degree - Adjustment for each antenna : Possible to adjust output (cover range) ( From Min. 0 Watt to 3 Watt per each antenna ) - Antenna : External type Included cooling system with 1 Fan **Option : can use with patch antenna - angle 120, directional block area : 60-80m -3 hours L-ion battery (Pre Built-in) Application of cell phone Jammer: ?Hospitals, medical centers or where medical instruments should not be disturbed by cellular signal. ?Theatres, cinemas, museums, art galleries, etc. ?Conference rooms and offices. ?Libraries and schools. ?Restaurants & high security premises that should be free from cellular phone communication. Specification Input Power DC 5 volt 10A Shielding frequency 800~964 MHz 890~964 MHz 1.700~2.000 GHz 2.000~2.200 GHz Nextel/TDMA/CDMA/AMPS /NMTP/Etacs/GSM900/ GSM1800/DCS/W-CDMA/PCS 3G(UMTS, CDMA2000) Shielding(block) range antenna output power within 40~60m radius Total 12W ( each antenna 3 watt ) depend on installing places Size 235mmX145mmX43mm net weight : 950g