This is an optimal choice for you to take this waterproof power 80W prison cell phone jamming system which is specially designed for CDMA, GSM and 3G signals! Besides, you will also be content with the easy operation method and high working efficiency as well! Go ahead! Just pick it up to your cart. Specifications: Isolation signal frequency: -CDMA:850-894 MHz -GSM:925-960 MHz -DCS/PCS:1805-1990MHz -3G: 2110-2170 MHz Out put power:80 Watt Power supply:110-230AC/DC27V Shielding Radius:up to 120 meters (Depends on the signal strength at the application place.) Weight (without antenna): up to 30KG Dimension (not including antennae) 36.5*25*48cm Cooling system : with integrated incoming air filter Housing:Metal enclosure Waterproof design Antennae type:7dBi high gain omni directional antenna Operation temperatures:-10¡ã-+50 C Humidity:Up to 80% Accessories 4pcs omni directional antennas Coaxial Cable