SureCall’s fiber-backed system delivers consistent signal across your entire building – up to 500,000 sq ft – with no dead zones, no deployment headaches, and full support for all major carriers with no retransmission agreements required.
Finally, reliable 5G and LTE coverage that reaches every nook and cranny

Most commercial buildings weren’t built with cell signal in mind.
Distance from towers, dense construction materials, metal roofs and low-emissivity glass block incoming signal. Basements and interior rooms go dark. And standard boosters – with their short range and coaxial cable – just don’t cut it.
That’s where SureCall’s SignalMax comes in.
It’s a hybrid-fiber distributed antenna system (DAS) that delivers strong, reliable 5G and LTE coverage from every major carrier – and pushes it deep into your building using fiber, not coax.
That means:
- Uniform coverage across your layout – from 50,000 to 500,000 sq. ft.
- No retransmission agreements. No sky-high engineering fees. No dead zones.
- A modular system you can deploy faster – and rely on longer
Plus, free design consultation to ensure your SignalMax configuration delivers complete coverage.
Why Wi-Fi falls short in warehouses and other large spaces
If you’ve been covering your warehouse or large facility with Wi-Fi, you’re probably still running into dead zones, dropped calls and unreliable connections. Wi-Fi just isn’t the optimal solution to cover such huge spaces. As operations become mobile-first, these gaps and small annoyances turn into real costs in both time and money. SignalMax solves that with carrier-grade coverage across massive footprints where Wi-Fi alone can’t keep up.
SignalMax Solves These 5 Problems
Dead zones in basements, interior rooms and upper floors
Modern materials kill RF signal. SignalMax captures strong outdoor coverage and pushes it deep inside – to every wing, hallway and stairwell.
Unreliable connectivity that disrupts operations
No more buffering video calls or dropped warehouse comms. SignalMax ensures reliable 5G/LTE throughout the building.
Coverage limits of standard boosters
Most boosters top out at 25,000 sq. ft. SignalMax starts at 50,000 and scales up to 500,000+ with additional remote units.
High cost and complexity of Active DAS
Active DAS is slower to deploy and expensive, with custom designs, long lead times and deep infrastructure costs. SignalMax delivers enterprise coverage without the overhead.
Carrier headaches – solved
SignalMax is FCC Part 20-certified, pre-approved for all major carriers, like Verizon, AT&T, T-Mobile and US Cellular – no retransmission agreements to sign, no red tape, no users left out.
Fiber backbone, not coax – more coverage than Passive DAS, less cost than Active DAS

Passive DAS relies on coaxial cable, which degrades signal strength over distance. That limits coverage, causes dropouts, and leads to messy workarounds like booster stacking.
SignalMax is different.
It uses single-mode fiber optic cable with SC/UPC connectors to move signal across your building.
Meaning virtually zero signal loss and a maximum supported fiber run of 6.3 miles.
That fiber backbone delivers:
- Strong, reliable performance in every wing, floor and zone
- Easy expansion as coverage needs grow
- Higher output at each remote unit, outpacing Passive DAS
But it’s not just better than coax – it’s a smarter alternative to Active DAS too. Active DAS requires extensive engineering, individual carrier coordination, and lengthy deployments. SignalMax skips all that. It’s FCC Part 20 certified and pre-approved for Verizon, AT&T, and T-Mobile. As SureCall puts it, it “costs only cents per square foot of coverage,” giving you enterprise-grade connectivity without the complexity.
SignalMax is the perfect middle-ground between Active and Passive.
Built for real-world installs – from warehouses to hospitals to campuses
SignalMax has proven deployments in all types of facilities including warehouses, data centers, manufacturing plants and multi-building facilities – up to 500,000 square feet.
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Modular coverage: Add up to 3 Remote Units and 16 indoor antennas per Remote Unit
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Near-lossless long-distance runs: Fiber enables multi-building applications
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Extended Range Tech™: Boosts signal at the source for max clarity and speed
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Remote control: Use on-site or monitor 24/7 with SureCall Cloud (free for the first year)
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Bluetooth install app: Real-time signal meter for easier optimization on site
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Rugged hardware: IP66-rated Master Unit handles dust, heat and cold without fail
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Flexible power: Each unit supports DC input, reducing the need for long copper runs
Not sure how a SignalMax deployment will actually cover your building? Take advantage of SureCall’s complimentary design services.

Related: Spec sheet + a deeper look
Ready to truly fix your building’s signal?
If you’re tired of spotty coverage, constant complaints or carrier-specific fixes that don’t scale – SureCall SignalMax is your upgrade.
Fiber-backed. Carrier-approved. Scalable to half a million square feet.
Let’s get your layout started and spec out a system that works the way your building actually operates.