Boost GSM W-CDMA 850mhz cell signal to make call and send txt,works with most US network providers.</br>Coverage up to 2100sqft,supports 50 simultaneous users,No more dropped calls.</br>Simple and easy to install, easy-to-open packaging,ship from US warehouse or China by UPS DHL EMS</br>Installation Points: facing the closest cell tower, need to place the indoor antenna facing away from the yagi antenna</br>Guarantee: 30-day money-back guarantee,Three months Free Replacement,1 Years Manufacturer Warranty</br></br>Product Description</br></br>Technical Specification:<br/> 1. Frequency Range:824-849MHz,869-894MHz<br/> 2. Max. Output power:22dBm<br/> 3. Max. Gain (dB) :62dB<br/> 4. I/O Port : N-female on both ends<br/> 5. Power Supply :Input AC100~240V 50/60Hz,output DC 5V 2A<br/><br/> Note:<br/> 1. This booster work for GSM W-CDMA 850mhz in US. There is a website of signal carrier's frequency for your reference: <b>http://www.unlockonline.com/mobilenetworks.php</b><br/> 2.before purchase, please make sure you can receive 1 bar or more signal outside the house. 3.The main unit would get warm after it has been worked for 30 minutes.<br/><br/> <b>Installation 1) There is seperate wall between indoor and outdoor antenna, so that the two antenna signal do not interfere with each other.<br/> 2) Please make the distance of indoor and outdoor antenna is more than 10 meters and do not put it in the same level.<br/><br/> 4. If booster does not work after installed, please contact us in time. We promise we can help you solve problem. In the meantime, we appreciate if you could send us installation pictures of booster and antennas. Thank you.</b><br/><br/> Package: <br/>1. 1 * Booster <br> 2. 1 * Power Adapter <br/> 3. 1 * Mounting Screw Kit <br/> 4. 1 * English User Manual <br/> 5. 1 * 3dBi Indoor Omni Ceiling antenna with 5 meters cable <br/> 6. 1 * 6dBi Outdoor Omni Tube antenna with 10 meters cable <br/> <br/></br><br/>http://www.amazon.com/gp/product/B01LXBX8KY