Description:    iMeaning GSM 900Mhz Repeater Signal Amplifier Mobile Phone GSM Booster Amplifier  This product adjustable (55 - 60db) signal amplifier、 working voltage ranges almost include various use environments、 product adaptability more strong.   Specification:   Frequency Range: Uplink 890 ~ 915MHz ; Downlink 935 ~ 960MHz Gain (dB): Uplink Gp55 Downlink Gp60 Export Power (Po): 10dBm Pass Band Ripple: 3dB I\/O Impedance: 50\/N connector Noise Figure: 4dB Transmission Delay: 0.5s Ambient Temperature: -10 ~- 50\u2103 Power Supply: AC110~220V 45 ~ 55Hz Reliability: To the GB6993-86 standard Electromagnetic Compatibility: To the ETS300 694-4 standard Function: a) Power supply LED denote b) Export power LED denote  Max. Square Meters: About 150-200MM²                       Package Included:      1 x GSM 900mhz Signal Repeater   1 x Yagi Outdoor Antenna   1 x Ceiling Indoor Antenna   1 x Charger    1 x Cable with about 9 to 10 Meters    Details pictures: