SKU: 35916753890
signal booster box

signal booster box Open Box: Cel-Fi DUO+ 4G LTE/XLTE/VoLTE Smart Signal Booster for Veriz

$18.88 $20.98
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Ships within 48 hours · Estimated delivery Jul 21 - Jul 26

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Description

signal booster box Open Box: Cel-Fi DUO+ 4G LTE/XLTE/VoLTE Smart Signal Booster for VerizThis is an open box item. The product will contain all original parts and accessories and is in like new condition. Open Box items may contain superficial scratches that do not affect performance. All open box units are sold AS IS and can be returned within 30 days from receipt of the product. The Cel Fi DUO+ is a powerful signal booster system that boosts 4G LTE Voice over LTE (VoLTE) and data for Verizon. The Cel Fi DUO+ offers up to 100 dB of gain

This is an open box item. The product will contain all original parts and accessories and is in like new condition. Open Box items may contain superficial scratches that do not affect performance. All open box units are sold AS IS and can be returned within 30 days from receipt of the product.

The Cel-Fi DUO+ is a powerful signal booster system that boosts 4G/LTE Voice over LTE (VoLTE) and data for Verizon. The Cel-Fi DUO+ offers up to 100 dB of gain and coverage up to 15,000 sq ft.

The Cel-Fi DUO+ system is incredibly easy to set up. The simple plug and play installation means that anyone can install the device. There are no external cables, antennas, wires, or drills needed. The units simply plug-in to power. Cel-Fi requires at least one bar of signal where the network unit will be located.

The DUO+ is best for Verizon users looking for an easy installation of a powerful signal booster without running cable or mounting outdoor antennas.

The Cel-Fi DUO+ has an LCD color interface and is fully self-contained and self-configuring. It supports the Cel-Fi WAVE mobile application.

Cel-Fi WAVE Mobile App

Cel-Fi WAVE is a smartphone app that will help you get the best performance from your Cel-Fi DUO+. The WAVE app is available for desktop, iOS, and Android. The app's dashboard allows you to optimize setup and download software updates.

Installation

The Network Unit (NU) should be placed where the existing cellular signal is best (generally by a window). The unit requires at least one bar of signal to work. The Coverage Unit (CU) should be placed in the location you need improved signal. You can optimize coverage by moving the CU. The NU and CU communicate with each other wirelessly to provide the best signal improvement possible. Red and Green icons on the CU LED user interface will indicate whether the CU should be closer or further from the NU.

Mounting

Mounting brackets and hardware are provided to mount both (or either) the Coverage Unit and the Network Unit. The brackets come equipped with screws and inserts for mounting in standard drywall.

The DUO+ comes with a 2-Year Warranty.

The Cel-Fi DUO+ is also know as part number D32-2/4/13.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 35916753890

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4.6 ★★★★★
Based on 5 reviews
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Verified Purchase
CactusReader
Draper, US
★★★★★ 4
Solid little workhorse
Color: Space Grey
Works well. Key part of my espresso setup. Battery charge lasts. Easy to use. My only gripe is that the power switch can be hard (for me) to turn on and off without lifting it up to find it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 15, 2026
J
Verified Purchase
julz
Battle Creek, US
★★★★★ 5
Worth it!
Color: Black
A necessity for anyone trying to elevate their espresso making game. I use this to measure my beans and to also measure the shot I pull and how long it takes to pull. It’s great quality and totally worth it. The scale is very quick to start when the shot starts to pull. Easy to use and a great scale.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 2, 2026
J
Verified Purchase
Jeffrey D. Lane
Port Orchard, US
★★★★★ 5
Works prefectly, accurate, easy to use, and looks great.
Color: Black
I didn't expect much but it works really well and seems to be very accurate. It's much more sensitive (to 0.1g) than the scale I was using to measure my coffee and the autostart timer works really well. Also, unlike my other scale, this one is USB-C rechargable and so far has no indication of needing a recharge after a week or so of daily use. My other scale uses CR2032 batteries and goes through a pair every three weeks, so being able to recharge instead is quite nice. It's small and I can use it to time the extraction and also use it to measure out heated water for tea, or whatever I need. This is definitely a steal for the price.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 9, 2025
L
Verified Purchase
lasersailor
Port Orchard, US
★★★★★ 5
Great value and full-functioned.
Color: Black
This is a simple, elegant little scale with timer. It's perfect for use with a small espresso machine like my Breville Bambino Plus. It shifts easily from counter use weighing beans before grinding, to placing on the drip tray to time and weigh shots. The top is smooth and water resistant. I think it's a great value.
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Reviewed in the United States on February 19, 2026
D
Verified Purchase
D
Lake Worth, US
★★★★★ 5
Great scale that needs some improvements to be perfect
Color: White, Color: White
Very accurate scale, looks good in white, timer works nicely and I do like the concept of the ratio conversion. Shown in photos with 0 measurement drift over time, even without the silicone mat. To make this the best scale in the price range, I would change: - The auto timer function. Timing currently stops if you pick up the brew to swirl; you must completely restart the process if you do happen to pick it up. I would change that to only stop on user input (pressing a button). - The ratio conversion. Why offer XX.0 precision if you can only change the ratio in whole amounts? I'd suggest offering 0.1 increments, selectable with +/- buttons instead of cycling through. - The silicone mat is not well affixed and slides around. Kind of useless as-is and I just keep it off. I would wrap the whole thing around the measurement platform, similar to how the Greater Goods scale does it, to really keep it secure. It's not perfect, but for the price, it's a 4.5/5 for me. Rounding up to 5 since a 4 is considered "bad" by today's online rating standards.
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Reviewed in the United States on December 22, 2025

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