This cell phone signal repeater booster is high gain 55dB for car,truck,RV,boat</br>This cell phone signal repeater booster will only work with Band 12 ATT 700MHz 4G Lte ( Frequency range:728-746MHz/698-716MHz )</br>This cell phone signal repeater booster will reduce dropped calls and improves the voice quality in car</br>This cell phone signal repeater booster could be used for car,truck,RV,boat</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:55dB<br> I/O Port:FME Male on both ends<br> Main Power:Input:12-24V Output:DC 9V 1.5A<br> <br> Package:<br> 1 * signal repeater booster<br> 1 * Power Adapter<br> 1 * 3dBi Gain Inside patch mounted antenna<br> 1 * 3dBi Gain Outside magnetic mounted antenna<br> 1 * English User Manual<br> <br> Note:<br> This car cell phone signal repeater booster could only work with Band 12 ATT 700MHz 4G Lte ,please kindly confirm the network frequency before order.<br> The network frequency could be checked on http://www.worldtimezone.com/4g.html<br> <br> Introduction:<br> This Cell Phone Signal Repeater Booster mainly use for car,truck,RV,boat. This device is strong to boost multiple users with maximum power,is cost effective solution with weak outside signal.</br><br/>http://www.amazon.com/gp/product/B06XHD23T9