Indoor Smart Signal Booster for 3G/4G/LTE networks around the world.

The Cel-Fi DUO/DUO+ are designed to dramatically improve HD voice and data coverage in up to two bands for 3G/4G/LTE for consumers while significantly improving network. Good things do come in small packages: With 3G/4G/LTE support, Cel-Fi DUO/DUO+ are compatible with the highest data services application available. All new patented echo cancellation algorithms enable Cel-Fi DUO/DUO+ to offer even higher signal levels throughout the coverage area than before.

  • 5 Min Setup: Plug & Play
  • Best Signal by 1000x
  • Coverage and Capacity up to 15,000 ft2 (1,500 m2 ) per System (Scalable)
  • Wireless Solution (External Antenna Available in Some Regions)
  • Remote Monitoring and Management via WAVE Platform

Solving Cellular Service Problems

Cel-Fi DUO/DUO+ improve 3G/4G/LTE cellular service by eliminating dead zones and dropped calls. With up to 100dB of gain, it will improve cellular service and reduce your cell phone’s power requirements to extend its battery life. The Cel-Fi DUO/DUO+ cover up to 15,000 square feet (1,500 square meters) of indoor space per system. It’s fully self-contained and self-configuring, requiring no external antennas or wiring required. Simply plug it in to boost indoor cellular coverage.

Sample Layouts

One Level

Two Level

Tech Specs

Configurations  (All systems are reconfigured to specific carriers)

Band 1
Bands 1/3
Bands 2/4
Bands 2/7
Bands  2/4/13
Bands  2/4/12
Bands  2/4



Power Consumption

Full uplink: 30 Watts
Idle: <20 Watts
Less than 15 Watts per unit

Electrical & Environmental Requirements

12 VDC
0 to 40 Celsius

Physical Specification

Network Unit:
• 158.5 x 146 x 59mm (560g)
Coverage Unit:
• 158.5 x 146 x 59mm (390g

Network Unit:
• 158.5 x 146 x 59mm (560g)
Coverage Unit:
• 158.5 x 146 x 59mm (390g)

Model Numbers


D32-2/4/13 (LTE only)