Work with 850mhz cell signal,if you are not sure your cell signal frequency, please contact us. We would help you to choose a correct Signal booster.</br>Large coverage, up to 3000sqft, good for home or office, no more dropped call again.</br>Easy to set up, ship by retail packaging via Express shipping,3-5 working days delivery.</br>Guarantee: 30-day money-back guarantee, 3 months free replacement,3 year manufacturer warranty.</br>Note: need to place the indoor antenna facing away from the outdoor antenna, to avoid interference.</br></br>Product Description</br></br>Technical Specification:<br/> 1. Frequency Range: 824-849MHz,869-894MHz<br/> 2. Max. Output power: 27dBm<br/> 3. Max. Gain (dB) : 70dB<br/> 4. I/O Port : N-female on both ends<br/> 5. Power Supply :Input AC100~240V,output DC 12V 2A<br/><br/> Note:<br/> 1. This booster only work for 850mhz,before purchase,please check your signal frequency. There is a website for your reference: http://www.unlockonline.com/mobilenetworks.php<br/> 2. For installation, you are supposed to pay attention to the following points:<br/> 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 not pointed at eachother, to avoid interference.<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 Whip Antenna<br/> 6. 1 * 8dBi Gain Outdoor Directional Yagi Antenna with 10m (about 32.8 feet) Cable<br/></br><br/>http://www.amazon.com/gp/product/B06WGQD74L