The BF-CL720 B5, B12,B13,17 four bands signal booster's working principle is the downlink amplifies the strongest cell phone signal from cell tower which is captured by the outdoor antenna,and the uplink works to receive the cellphone signal,after amplification and transmit to the cell tower.

Features:

• For home,office,apartment,basement....etc use
• ALC and AGC functions
• Digital LCD display outdoor and indoor signals
• Full set contains everything needed
• Simple installation
• Clearly voice communication
• Faster 4G 5G internet data
• Self-oscillation eliminated
• LCD Installation reminder
• Extend cellphone battery life.
• Reduce cellphone radiation.
• Coverage up to 800 square meters

Kits included:

• Tri band signal booster*1

• Outdoor Omni antenna
  

• Indoor panel antenna

• Outdoor 49.2 ft meter coaxial cable
  

• Indoor 16.4 ft coaxial cable
  

• Power supply and other mounting accessaries .

Installation steps:
1,Walk around your roof to find the strongest signal and fix the outdoor antenna.
2,Connect the outdoor antenna to the BS port of the booster by the cable provided
3,Ensure the VERHICAL distance from outdoor to indoor antenna at least 7 meters
4,Indoor antenna connect to MS port by the indoor cable provided.
5,Outdoor antenna must be isolated with the concrete wall from indoor antenna.
6,Connect the booster to the AC supply once all the connections done.
7,Make sure the outdoor signal strong enough to cover the area you need

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On Jan 3, 2024 at 00:51:55 PST, seller added the following information: