When using the GSM signal booster indoors you should put attach type of antenna. They can work with all types of GSM signal boosters.
Specifications:
Frequency:
Uplink 800 ~ 2500MHz
Gain (dB): Uplink 3DB
Impedance: 50 ohms
Operating temperatures: -10 ℃ ~ 60 ℃
Size: F 165×90 mm
Maximum power: 50W
Connector: N-connector, female
Weight: 0.48 kg
Color: White