Product description Thanks for your attention! There are fine kinds of dz-101p series designed to provent from explode, to be suitable for gas station and other place which need to provent from explode. Today we would like to introduce our signal jammer dz-101p-a. 1. Tx-frequency: (a)tx-frequency:900mhz(870-880mhz&935-960mhz) (b)tx-frequency:1800mhz(1805-1850mhz&1930mhz) Available systerm:gsm, cdma, dcs, pcs and phs 2.Total output power: 5w 3.Jamming radius: 2-35 meters depends on -75dbm 4.Power supply: ac110v or ac220v 5.Antenna:2pcs omni-directional antennas 6.Net weight: 8.5kg 7.Worktime: it can work stably for long time 8.Running temperature: -40 to +55 celsius degree 9.Humidity: 30%-95% Packing: polyfoam and brown carton packing