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Cel-Fi DUO+ 4G LTE/XLTE/VoLTE Smart Signal Booster for Verizon

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Item Number: 7040



Up Front:

Monthly Fee:

The Cel-Fi Duo+ Smart Signal Booster repeater kit can be used by home and enterprise consumers to improve indoor cellular signal for better Verizon voice and data performance. This model works with Verizon’s U.S. network and is compatible with their 4G LTE and XLTE frequency bands, boosting all Verizon devices within range. Cel-Fi provides coverage for up to 15,000 square feet, making it ideal for large homes and offices.

Cel-Fi boosters are radically different from traditional repeaters, as they are the only intelligent booster that's wireless-in/wireless-out. The Network Unit receives the signal from the mobile network (it requires as little as one bar of signal) and relays it wirelessly to the Coverage Unit that amplifies it for up to 100dB of gain. The wireless link is encrypted as well to maintain secure communication. It supports as many as three cellular bands and can still function in the presence of other RF signal emitters or Wi-Fi devices.

Cel-Fi is easy to set up and doesn't require the installation of external antennas or bulky coaxial cables. It also doesn’t require handset registration or a configuration setup by the user. In fact, Cel-Fi intelligently and automatically senses and adapts to its environment, including to changes made by your carrier or to changes caused by nearby equipment like Wi-Fi or other Cel-Fi devices. Gain is optimized using a software-based coverage pattern for better performance. This Verizon booster simplifies LTE signal boosting and can quickly add thousands of square feet to a coverage area!

Amplifier Features:

  • Coverage area*:up to 15,000 square feet
  • All-in-One Kit? YES
  • Compatibility:This amplifier supports 4G LTE, XLTE, and VoLTE (HD Voice) for Verizon only. It is NOT compatible or approved for use with ANY other carrier. It will not help with Verizon 3G, and it will only help with voice/calling if you have HD Voice/VoLTE enabled on your phone and are in an LTE area. Read more about enabling HD Voice/VoLTE
  • Installation: Cel-Fi doesn't require the installation of external antennas, bulky coaxial cables, handset registration, or a configuration setup by the user. In fact, Cel-Fi intelligently and automatically senses and adapts to its environment-including to changes made by your carrier, or to changes caused by nearby equipment like Wi-Fi, or other Cel-Fi devices. Multiple Units of Cel-Fi can be deployed in large offices and will not interfere with coverage strength.

Stop by our warehouse in Cary, Illinois for a demo, as we have one of these set up and in use!

*Many factors will influence the actual coverage area you will see from a repeater, including layout/floorplan, construction, and original un-amplified signal strength. Depending on your situation, you may see more or less coverage than the estimates listed here. It is not possible to guarantee coverage area.

celfi pro install

Installation notes:

  • There must be at least one bar of usuable signal at the window in which you install the Network Unit. 

Features & Benefits:

  • Wirelessly linked Network and Coverage Units (5GHz U-NII band).
  • Peaceful coexistence with adjacent 802.11( 2.4GHz&5GHz), and femtocell devices.
  • Max EIRP: 10 dBm downlink per 5 MHz and up to 22 dBm uplink, per band.
  • Software-based optimization of integrated antenna coverage pattern which maximizes system gain and provides improved
  • Automatic Gain Control (AGC) based on real-time echo-cancellation.
  • Seamless call handovers between Cel-Fi systems and the macro network.
  • Subscriber devices enjoy improvements in battery life.
  • Bluetooth communications between a mobile handset and Cel-Fi via our Cel-Fi WAVE Mobile App provides software update
    capability and advanced information for technical support.
  • Adaptive signal equalization.
  • Includes Nextivity's 3rd-generation (ARES) chipset with 6 core processor.
  • Up to 3 cellular bands supported; relaying two simultaneously. Cel-Fi DUO+ boosts service for Verizon 4G LTE and XLTE only.
  • Supports E-UTRA bands 2(1900), 13(700) and 66(2100/1700)
  • Support for 3GPP Rel. 10 features.
  • Network-Safe software prevents uplink system gain from exceeding path loss between Network Unit and closest tower,
    thus eliminating unnecessary rise in base station noise level.
  • Uplink Muting Mode automatically shuts down uplink cellular transmissions when no active user equipment is detected.
  • Secure and ciphered provisioning for only Verizon’s channels based on network broadcasted PLMN ID.
  • Full Band Scan feature discovers newly deployed and re-farmed spectrum

Package Includes:

  • Network Unit
  • Coverage Unit
  • 2 Power Supplies
  • 2 Mounting Brackets
  • Quick Start Guide


  • RF Specifications:
    • Radio 1: Band 2
      • Frequency DL: 1930-1990 MHz
      • Frequency UL: 1850-1910 MHz
    • Radio 2: Band 13
      • Frequency DL: 746-756 MHz
      • Frequency UL: 777-787 MHz
    • Radio 3: Band 66
      • Frequency DL: 2110-2180 MHz
      • Frequency UL: 1710-1780 MHz
  • Environmental:
    • Operating temperature: 0° to 40°C
    • Storage temperature:-25° to 60°C
    • Relative humidity: 5% to 95%, noncondensing
    • RoHS II 2011/65/EU
    • WEEE (2002/96/EC)
    • ErP 2009/125/EC
  • Power:
    • 12VDC via external supply (two included)
    • External Supply: 100 to 240 VAC, 47-63Hz
    • Power consumption less than 25W per unit
  • Physical Specification:
    • Network Unit: 158.5 x 146 x 59mm, Weight 19.75oz.
    • Coverage Unit: 158.5 x 146 x 59mm, Weight 13.75oz.
  • Standards:
    • FCC Parts 15, 20, 22, 24, 27
    • EN 301 489 -1, 17, 23
    • EN 301 893
    • EN 301 908-1, 11, 15
    • EN 300-328
    • EN 62311
    • UL 62368-1
    • CSA C22.2#62368-1 IEC/EN 62368-1
    • 3GPP TS 25.143 Rel.10
    • 3GPP TS 36.143 Rel.10
    • EN 50566/62209-2/62479 (SAR) Bluetooth SIG

This is a CONSUMER device.
BEFORE USE, you MUST REGISTER THIS DEVICE with your wireless provider and have your provider's consent. Most wireless providers consent to the use of signal boosters. Some providers may not consent to the use of this device on their network. If you are unsure, contact your provider.
You MUST operate this device with approved antennas and cables as specified by the manufacturer. Antennas MUST be installed at least 20 cm (8 inches) from any person.
You MUST cease operating this device immediately if requested by the FCC or a licensed wireless service provider.
WARNING. E911 location information may not be provided or may be inaccurate for calls served by using this device.
Please note, the four largest carriers - AT&T, T-Mobile, Verizon and Sprint - and more than 90 regional carriers have given blanket consent for use of all boosters certified to the new FCC standards.

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