Top Signal 2X HiBoost SLT Smart Link Cell Signal Booster 2 Antennas TS545121: Kit

Top Signal 2X HiBoost SLT Smart Link Cell Signal Booster 2 Antennas TS545121

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  • Commercial/professional system
  • Two two zones of indoor coverage for up to 40,000 sq ft & 200 users
  • Ultra‑thin dome inside antennas
  • ½-inch carrier-grade coax cable
  • Automatic or adjustable gain
  • Boosts voice, text & 5G/4G/3G data for all major carriers
  • Includes Smart Link Bluetooth monitoring capability
Outside Signal Strength
Coverage @ 700 MHz LTE
5 Bars
Up to 40,000 ft²
3 Bars
Up to 24,000 ft²
1 Bar
Up to 5,000 ft²


Free lifetime support
SKU: TS545121

Product Description

This system has been discontinued. Please see our other HiBoost SLT signal booster systems.

Features of the Top Signal 2X HiBoost SLT Smart Link

  • Upgraded half‑inch carrier-grade coax cable and two ceiling-mounted antennas deliver double the square foot coverage of the regular Top Signal HiBoost SLT Smart Link system.
  • Most powerful booster for medium-sized businesses and public buildings.
  • Heavy-duty metal case with heat sink.
  • Easy-to-read backlit LCD display, with uplink/downlink/power status on one screen and optional manual settings.
  • Monitor and troubleshoot your booster with HiBoost’s Signal Supervisor app for smartphones.
  • Boosts signal for up to 200 simultaneous cellular devices.
  • Choice of outside antenna at no additional charge. (Get help picking the right antenna.)
  • Includes commercial-grade antennas and components.
  • Carrier agnostic: Works with all major U.S. and Canadian carriers.
  • Improves 5G, 4G LTE, and 3G service for voice, text, and data. (Learn more about 5G compatibility.)

The Top Signal 2X HiBoost SLT Smart Link is a two-antenna system designed for medium-to-large sized offices or building areas that need improved cell signal reception and have high user demands. The SLT Smart Link improves both voice and data to reduce dropped calls and missed emails and texts, keeping your business and employees connected with a stronger cell signal.

This kit includes two inside ultra-thin dome dome antennas that send amplified signal to the phones in your building.

HiBoost LCD display and controls The Top Signal 2X HiBoost SLT Smart Link features a backlit LCD display and controls for gain and power.

This system doubles your coverage!

The Top Signal 2X HiBoost SLT Smart Link system uses the same booster as the standard kit, but includes half‑inch carrier-grade coax cable with half the signal loss of the standard 400 coax. With two ceiling-mounted ultra-thin dome antennas, this 2X system will double the coverage area provided by your system.

Double the coverage area The ultra-low loss coax cable and two antennas in this system double your amplified cell signal coverage area.

Who is the Top Signal 2X HiBoost SLT Smart Link for?

  • Medium-to-large sized offices and buildings with heavy cellular user and data loads.
  • Remote locations with weak cell service.
  • Urban locations with building materials that block outside cell signal (steel, glass, concrete, plaster, etc.).
  • Areas below ground level, and other places where cell reception is poor.

Monitor your SLT Smart Link system from your smartphone

HiBoost’s Signal Supervisor app for smartphones helps you set up and monitor your cell signal booster. The booster links to your iPhone or Android smartphone via a Bluetooth or WiFi connection. With Signal Supervisor, you can:

  • Register your booster via a QR Code or Bluetooth.
  • Monitor your signal booster’s status via Bluetooth.
  • Set up and receive remote alerts if your booster isn’t operating properly.
  • View your booster’s power settings, decibel gain, and dBm output.
  • Manage multiple boosters.

HiBoost’s Signal Supervisor app is available for Apple iOS and Android devices.

The HiBoost Signal Supervisor app for iPhone and Android smartphones for use with HiBoost Smart Link cell phone signal boosters

Best practices: A custom-designed Top Signal 2X HiBoost SLT Smart Link solution

In a large building, office, or warehouse, you’ll get the best results and performance from a Top Signal 2X HiBoost SLT Smart Link with a custom design and professional installation.

Working with your floor plans, Powerful Signal’s design engineers will create design specifications that will allow you to use the fewest number of components to get the maximum amount of cellular coverage inside your building.

Powerful Signal’s professional installer will have knowledge of local building codes and the proper tools and experience to make sure your system is set up and configured correctly.

Call Powerful Signal at 866-912-3444 or request a free custom quote online. We’ll design a custom system that will solve your cellular reception and connectivity problems at the best possible price point. We’ve designed thousands of cell signal amplifier systems—let us create one for you!

Office floor with a Top Signal HiBoost cellular DAS system and dome antenna An office floor flooded with cellular signal from a Top Signal HiBoost amplifier and one dome antenna.

Purchasing a Top Signal 2X HiBoost SLT Smart Link system

The Top Signal 2X HiBoost SLT Smart Link can be self-installed if you are familiar with cellular amplification equipment. We’ll be happy to advise you on the best placement of antennas or provide a custom, turnkey solution. If you purchase this system as a standalone product, it includes the following components:

Top Signal HighBoost SLT Smart Link cell signal booster TS545101 icon Top Signal HiBoost SLT Smart Link cell signal amplifier Pro20‑5S‑BTW
HiBoost 12V/3A AC/DC power supply icon AC/DC adapter GM50‑120300‑F
Top Signal omnidirectional building antenna TS210471 icon Choice of… Wideband outdoor omni antenna TS210471
Top Signal 4G/3G Outdoor Pole-Mount Directional LPDA Antenna with N-Female Connector (50 Ohm) TS220971 icon …or Wideband outdoor LPDA antenna TS220971
Top Signal dome antenna TS250374 icon Wideband indoor ultra-thin dome antenna TS250376 (×2)
Top Signal half-inch carrier-grade coax cable 75 feet TS360075 icon 75′ half-inch carrier-grade coax cable TS360075 (×2)
Top Signal half-inch carrier-grade coax cable 50 feet TS360050 icon 50′ half-inch carrier-grade coax cable TS360050
Top Signal half-inch carrier-grade coax cable 30 feet TS360030 icon 30′ half-inch carrier-grade coax cable TS360030
Top Signal 2-way splitter TS412001 icon 2‑way splitter TS412001
Top Signal adjustable rooftop antenna mount TS430001 icon Adjustable rooftop antenna mount TS430001
Top Signal 50-ohm lightning surge protector TS450001 icon 50‑ohm lightning surge protector TS450001
HiBoost SLT Smart Link user manual icon HiBoost SLT Smart Link user manual

How the Top Signal 2X HiBoost SLT Smart Link works

The Top Signal 2X HiBoost SLT Smart Link receives the outside cell signal, amplifies it, and rebroadcasts it inside your office through two ceiling-mounted ultra-thin dome antennas. This allows you to stay connected in areas where cell service is poor or where your office’s building materials interfere with signals from the local cell tower.

Works with all major cellular carriers

The Top Signal 2X HiBoost SLT Smart Link works with all major wireless carriers, including Verizon, AT&T, T-Mobile, Sprint, UScellular, and most others.

It operates on common 4G/3G cellular frequencies.

  • 700 MHz (SMH) bands 12, 13, 17.
  • 850 MHz (Cellular 850) band 5.
  • 1700/2100 MHz (AWS) band 4.
  • 1900 MHz (PCS) bands 2, 25.
Carrier logos for Verizon, AT&T, Sprint, T-Mobile, UScellular

Which outdoor antenna should I choose?

This kit gives you the choice of an outdoor directional or omnidirectional antenna. Here are some general guidelines for selecting the right antenna.

  • A cylindrical omnidirectional antenna works best in most circumstances. The omni gathers signal from all carrier towers in all directions.
  • A wedge-shaped LPDA directional antenna works best if your building is in a remote location with one single, distant tower providing cell service for your area. The LPDA is also an excellent choice if there’s a powerful cell tower nearby but you need to bypass that tower in favor of a more distant one operated by your preferred carrier.

If you’re still not certain which antenna will work best for you, please call us at 866‑912‑3444. Our technical support representatives will be happy to discuss your specific requirements and give you a recommendation based on years of professional experience.

How much area will the Top Signal 2X HiBoost SLT Smart Link cover?

This system comes with two ultra-thin dome antennas that broadcast improved cellular signal in a spherical pattern. With strong outside cell signal (−95 dBm RSRP or greater), you can typically cover 40,000 square feet of indoor building space with 700 MHz signal. The size of the coverage area depends on many factors, including:

  • Outside cell signal strength received by the donor antenna.
  • Which outdoor donor antenna your choose. The omnidirectional antenna is easier to set up and will pick up signal from all towers and carriers in a 360° radius. The directional (LPDA) antenna provides stronger signal gain by targeting a specific tower, possibly with access to fewer carriers.
  • Inside building materials. Cellular frequencies pass through wood framing and drywall more easily than through steel and concrete.
  • Cellular frequencies used by the carrier and the device. Lower-frequency 700 MHz and Cellular (850 MHz) signals travel farther than higher-frequency PCS (1900 MHz) and AWS (1700/2100 MHz) signals.

Substandard or inadequate conditions in any of these factors will reduce your coverage area.

Powerful Signal has over a decade of experience designing and installing cellular amplification systems. Please call us at 866‐912‐3444 or contact us online, and we’ll be happy to calculate the coverage area this system will provide in your building and answer any other questions about this amplifier.

FCC notice

For information on federal rules governing the use of consumer cell signal boosters, please see our FCC notice page.

Prop 65 notice

Caution triangle icon Warning This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information go to

Product Specifications

Small Office
Strong outside signal (−95 dBm RSRP, 5 bars):
Up to 40,000 ft² indoor coverage @ 700 MHz
Fair outside signal (−105 dBm RSRP, 3 bars):
Up to 24,000 ft² indoor coverage @ 700 MHz
Weak outside signal (−115 dBm RSRP, 1 bar):
Up to 5,000 ft² indoor coverage @ 700 MHz
Outside antenna:
Omnidirectional cylinder or directional LPDA
Inside antenna:
Omnidirectional ultra-thin dome (×2)
Cable Type:
½-inch foam polyethylene
Connector Type:
50 Ω
+70 dB max
Max Output Power (Uplink):
24 dBm
Max Output Power (Downlink):
12 dBm
Booster Case Material:
Signal Readout:
Backlit LCD display with adjustable uplink, downlink & power by channel

Warranty Information

For warranty information on this product, please see our Top Signal warranty information page.

Questions & Answers

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