Thanks for your attention! There are three kinds of DZ-101F series such as: *DZ-101F-A with IR remote control *DZ-101F-B *DZ-101F-E with IR remote control Today we would like to introduce our Signal Jammer DZ-101F-A. 1.TX-Frequency: (A)TX-Frequency:CDMA 870-880MHz (B)TX-Frequency:GSM 935-960MHz (C)TX-Frequency:DCS 1805-1850MHz (D)Tx-Frequency:3G 2110-2170MHz or PCS 1930MHz 2.Control:IR remote control(turn on/off and adjust output power) 3.Total Output Power: 10w 4.Jamming Radius: 2-50 meters depends on -75dBm 5.Power supply: AC110V or AC220V 6.Antenna:4pcs Omni-directional antennas 7.Net Weight: 1.5kg 8.worktime: It can work stably for long time 9.running temperature: -40 to +55 Celsius Degree 10.humidity: 30%-95% Welcome to contact us to know more details and thanks for your business opportunity.