The HJCINTL cell phone signal repeater booster antenna kit is High Gain 70dB, solve your poor signal reception problem inside your house and office.</br>The HJCINTL cell phone signal repeater booster antenna kit would work for Band 12 Band 17 (ATT 700MHz,T-Mobile 700MHz) network frequency.</br>The HJCINTL cell phone signal repeater booster antenna kit could work for about 2500sq.ft in open space. If your outdoor signal is poor, the actual indoor coverage will be smaller accordingly. If you expect excellent indoor performance while your outdoor signal is very poor, or your house is very big and you want your whole big house has good signal receiption, you must choose other bigger and more powerful booster kit with bigger antennas.</br>The HJCINTL cell phone signal repeater booster antenna kit would reduce dropped calls and improves the voice quality in your house or office by boosting your signal strength. This repeater kit is suitable for a large house or small office/home office.</br>A 30-day money-back guarantee and is backed by a one-year manufacturer's warranty</br></br>Product Description</br></br>Frequency Range:728--746MHz, 698--716MHz<br> Max Output Power: 27dBm<br> Max Gain (dB):70dB<br> I/O Port:N-Female on both ends<br> Main Power:AC 100-240V, DC 12V 2A<br> <br> Package include:<br> Signal Repeater Booster<br> Indoor antenna<br> Outdoor antenna<br> 5m OD7.5 Coaxial cable<br> 10m OD7.5 Coaxial cable<br> AC power adapter<br> Crews for Mounting<br> English User Manual<br> <br> Note:<br> The cell phone signal repeater booster could only work with ATT 700MHz 4G Lte network frequency,so please kindly confirm the network frequency before order.<br> <br> The HJCINTL cell phone signal repeater booster antenna kit includes a booster, an indoor antenna and an outdoor antenna, the outdoor antenna could pick up good mobile signal from outside of your house, and send the signal through coaxial cable to the booster, the booster could amplify the signal, then the amplified signal is sent to the indoor antenna, the indoor antenna can transmit the signal into your house, so you can enjoy clearer phone call or faster mobile date inside your house.<br> <br> The HJCINTL cell phone signal repeater booster antenna kit would reduce dropped calls and improves the voice quality in your house or office by boosting your signal strength. This repeater kit is suitable for a large house or small office/home office.<br> <br> Note:</b> <br> 1.The HJCINTL cell phone signal repeater booster antenna kit would work with ATT 700MHz 4G LTE,T-Mobile 700MHz 4G Lte,please kindly confirm the network frequency before order.<br> 2.Make sure that you can make calls outside your house,at roof or wherever you plan to install the Outdoor Antenna.If there is no signal outside your house,the booster will not work for your phone.</br><br/>http://www.amazon.com/gp/product/B01MZ9XJYY