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PRE-ENGINEERED INTERCOM & VISITOR ENTRY
INT-TTU3 Published reference design

INT-TTU3 — Alpha TTU-3 Counter-Mount Intercom

Heavy-duty counter-mount intercom reference for secure service windows.

PrimaAlpha2 endpointsLocal analog audioWindow intercom
SYSTEM ARCHITECTURE

How INT-TTU3 is built

Secure counter / detention / service · Alpha

Visitor / CallerCall origin
Window / Counter IntercomEntry / communication point
Operator PositionAnswer / route call
Two-Way VoiceVoice / video / release
DESIGN INTENT

What this visitor-entry design is meant to do

Heavy-duty counter-mount intercom reference for secure service windows.

The bill of materials below is tied to live Safsale product cards. Treat it as a starting point and adjust station counts, door-release interfaces, cable topology, PoE, network, mobile/app licensing and call-routing rules to the actual site.

Compatibility checkpoint: do not assume cross-brand compatibility. Verify the selected manufacturer's current station capacity, cabling, power, SIP/profile support, relay behavior and licensing before ordering.
Reference endpoints2 stations / endpoints
TransporteLocal analog audio
System formWindow intercom
Primary brandAlpha
Market tierPrima
Best fitSecure counter / detention / service
Design noteReference architecture only; final power, switch capacity, cable topology, call routing, lock-release interface and product compatibility are site-specific
ENGINEERING TOOLS

Plan endpoint count, PoE and call bandwidth

BILL OF MATERIALS

INT-TTU3 equipment list

Each row opens the live Safsale product card.

Required equipment total$2,893.30
Optional equipment shownSolicitar presupuesto
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FAQ

INT-TTU3 questions

What is included in INT-TTU3?

The reference BOM uses live Safsale product cards for the main door/entry station, indoor or master stations, and supporting network/cabling items shown on the page.

How many stations can this design support?

The page shows a reference endpoint count. Actual capacity depends on the selected platform, power supply, bus/IP topology, licensing, call routing and manufacturer limits.

Can the intercom release an electric lock?

Many intercom platforms provide a relay or access-control integration path, but the lock, power supply, egress behavior and interface must be verified for the actual door and selected equipment.

How do I size PoE and network capacity for an IP intercom?

Count every PoE endpoint, use the maximum wattage per device, add switch power headroom, and separately calculate simultaneous call bandwidth. Use the Safsale intercom PoE and SIP bandwidth tools as a first pass.

Can different brands be mixed?

Do not assume cross-brand compatibility. SIP can improve interoperability on some systems, but video, directory, mobile app, relay, licensing and provisioning features are platform-specific. Verify current documentation before mixing products.

RELATED DESIGNS

Compare nearby intercom systems

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NEED A SITE-SPECIFIC VERSION?

Use INT-TTU3 as the baseline, then map the real calls and entries.

Safsale can quote alternate door stations, indoor stations, PoE switching, cabling and access-control interfaces.

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