Cell Phone Signal Amplifier: 1,Various types: 2W,5W,10,20Wetc. 2 ... output power for outdoor; Cell Phone Signal Amplifier Function:Cell Phone Signal Amplifier is designed to solve problems of weak ... enables easy upgrade;Typical Application:Kingtone Cell Phone Signal Amplifier widely used in the areas with small traffic volume ... Wireless Modem + Chargeable Li-ion Battery Cell Phone Signal Amplifier 850MHz