KW20L Airtel 4G cell phone network booster DCS LTE Band 28 metal outer covering AGC function 70dB high gain with 12 months warranty

This KW20L 4G cell phone network booster is supporting boosting DCS LTE Band 28 metal outer covering AGC function 70dB high gain with 12 months warranty. Same as Lintratek KW16L-Pro, KW20L 4G cell phone network booster is also equipped with advanced chip, this makes the feature of KW20L single band and other models of this series: the AGC function. AGC Function is usually what we say the auto gain control. When we connect the full kit device, the signal booster will find the right frequency and amplify the signal in 5sec, meanwhile, the KW20L 4G cell phone network booster will control the gain smartly to ensure the function work steadily, even prolong the lifespan of the device. This model KW20L 4G cell phone network booster can only strengthen the one kind of signal frequency once time, if you want to share the device with others people that you are using different network carriers (network operators), KW20L series has dual band, triple band, quad band and even five band for you.