For GSM/DCS 900/1800MHz. CE and RoHs Approved.</br>Frequency Range:Uplink 890-915MHz 1710-1785MHz; Downlink 935-960MHz 1805-1880MHz; High gain easy installation and operation.</br>Effectively reduce mobile phone radiation on the human body. Extend mobile phone battery time and life.</br>Dependability stand by GB6993-86 standard .Compatibility of electromagnetism according with ETS300 609-4 .</br>Notes: It could only strengthen cell phone signal it could not produce cell phone signal if there is no cell phone signal at all in your area there is no need to use it.</br></br>Product Description</br></br><b>Specifications:</b> <br>Frequency Range:Uplink 890-915MHz 1710-1785MHz; Downlink 935-960MHz 1805-1880MHz <br>Output Power e17dBm <br>Gain: Uplink 70dB; Downlink 75dB <br>Outdoor Sucker Antenna Gain Max. 5dB <br>Indoor Whip Antenna Gain Max. 3dB <br>Repeater Coverage Up to 200M2 <br>Impedance 50 ohms <br>Input Power AC 110V - 220V 50Hz - 60Hz <br>Item Diemension 195*148*20CM <br>Item Weight 0.65KG <br> <br>Included: <br>1 x Amplifier main device <br>1 x Adapter (US Plug) <br>1 x Outdoor antenna set (10M) <br>1 x Indoor antenna <br>1 x English user manual <br> <br>Installation steps: <br>1)Use the mobile phone in outdoor a