Callboost indoor wideband 2G 3G 4G 5G omni ceiling cell phone booster antenna,frequency range 698~960/1710~2700/3300~3800MHz,gain 3/5 dBi,widely used as the service antennas to mobiel signal booster. Elegant appearance,simple installation ,stable performance. Good performance in anti-vibration and resistant to aging. -Fit for installation for Aluminum ceiling and Gypsum Ceiling. Send us inquiry to get code for checking the specifications.