Aiphone Tw-ta Tall Assistance Tower

Aiphone TW-TA Tall Assistance Tower

Overview

The Aiphone TW-TA is a 112-inch tall assistance tower built from aluminum 6061-T6 — a material choice that delivers both structural rigidity and corrosion resistance in outdoor and semi-outdoor deployment environments. Weighing 68 lbs, the tower is designed for fixed-location installation where you need emergency communication, beacon signaling, or audio-visual assistance callpoints at significant height. The unit houses a UL-514-A listed electrical box, meaning the internal wiring enclosure meets Underwriters Laboratories standards for safety and durability in commercial environments. If you're deploying assistance stations in parking structures, loading docks, or expansive outdoor facilities where visibility and reach matter, the TW-TA delivers the form factor to get callpoints and beacons above ground-level sightlines.

Key Features

• 112-inch Height: Elevates beacon lights and callpoint speakers above vehicles and temporary obstructions, ensuring visibility and audibility from greater distances without mounting to building facades or installing separate poles.
• Aluminum 6061-T6 Construction: Resists corrosion in wet and coastal environments without the weight penalty of steel — matters for outdoor parking lots and facilities near water where salt spray would degrade lesser alloys.
• 8-inch Square Cross-Section: Provides lateral wind stability and structural rigidity across the full 112-inch height; the compact footprint (8" W × 8" D) fits tight spaces like parking lot islands or loading dock perimeter routes.
• 24V DC Beacon Voltage: Low-voltage beacon operation simplifies power distribution from a central emergency-system panel and eliminates the need for high-voltage contactor logic — standard practice in parking and facility-wide emergency signaling.
• 24V DC Station Illumination: Callpoint stations mounted on the tower operate at the same voltage as the beacon, allowing a single power supply to energize both audio callpoints and visual indicators without stepping down or requiring auxiliary transformers.
• UL-514-A Listed Electrical Box: The junction box housing internal wiring meets rigorous safety standards for non-hazardous locations, ensuring compliant installations in commercial and public-access facilities where code inspectors verify electrical enclosure listings.
• L-Bolt Mounting Kit (TW-MKL): Included fastening system anchors the tower to concrete pads or threaded foundation bolts, providing a repeatable, code-compliant installation method without requiring custom welding or fabrication on-site.

Integration and Deployment Context

The TW-TA pairs with Aiphone intercom and emergency callpoint systems to create distributed assistance stations across large outdoor areas. Mounting height and electrical capacity — both 24V — align with standard emergency-system architectures used in parking facilities, transit stations, and industrial campuses. The tower's footprint and weight make it suitable for surface-mounting to prepared concrete foundation pads, eliminating the structural demands of wall-mounted or pole-mounted alternatives. If you are integrating assistance communication into a facility security or emergency-response plan, the TW-TA's fixed height and pre-engineered electrical enclosure reduce design and installation complexity.

Material and Environmental Durability

Aluminum 6061-T6 is selected for outdoor environments because it resists oxidation without paint or coating maintenance — a practical advantage in parking structures and uncovered outdoor areas where repainting isn't feasible. The material's strength-to-weight ratio keeps the tower's 68-lb total weight manageable for two-person installation and relocation if needed. For corrosive environments (coastal, high-humidity, salt-spray zones), aluminum 6061-T6 outperforms mild steel significantly, though stainless fasteners should be specified to eliminate galvanic corrosion at connection points.

Electrical and Power Specifications

Both beacon and station illumination operate at 24V DC, a standard low-voltage level in emergency-communication and facility-management systems. This voltage choice simplifies power sourcing from a central emergency panel or distributed power supply and eliminates high-voltage hazards associated with standard line-voltage 120V/240V circuits. The UL-514-A listed electrical box accommodates up to the capacity of whatever intercom or beacon equipment you mount, but you must verify that the combined wattage of all callpoints and beacons does not exceed your power-supply amperage rating.

What's in the Box

1x TW-TA tower (aluminum 6061-T6, 112" H × 8" W × 8" D, 68 lbs), 1x TW-MKL L-bolt mounting kit (fasteners and template for concrete pad or threaded foundation installation).

Frequently Asked Questions

Q: Is the TW-TA suitable for outdoor installation?

A: Yes. The aluminum 6061-T6 construction resists corrosion in outdoor and semi-outdoor environments. For coastal or high-salt-spray areas, specify stainless steel fasteners at connection points to prevent galvanic corrosion.

Q: What is the foundation requirement for the TW-TA?

A: The tower mounts via the included TW-MKL L-bolt kit to a prepared concrete pad or threaded foundation bolts. Consult local wind-load and structural codes for your region to determine footing depth and bolt spacing; typical installations use a concrete pad 24–36 inches square and 18–24 inches deep with four anchor bolts embedded.

Q: Can I add multiple callpoints and beacons to the TW-TA?

A: Yes. The UL-514-A listed electrical box accommodates multiple devices. Total connected wattage must not exceed the capacity of your 24V power supply; verify amperage before final wiring.

Q: What is the wind-load rating of the TW-TA?

A: Wind-load capacity depends on equipment mounted and local codes. Consult structural engineering or Aiphone pre-sales for load calculations specific to your facility's geographic wind zone and intended equipment configuration.

Q: Does the TW-TA come with a power supply?

A: No. The tower is a structural and electrical-enclosure assembly only. You must source a 24V DC power supply with sufficient amperage for all connected beacons and callpoint stations. Most facilities source this from a central emergency-communication panel.

Q: Is installation a two-person job?

A: At 68 lbs, the tower itself is manageable for two people, but foundation preparation (concrete pad or bolt installation) is the primary labor factor. Allow time for concrete curing and electrical rough-in before final assembly.

Marty Allison

I've specified the Aiphone TW-TA (often searched as TW-TA tower or TW TA) on several parking facility and campus-safety projects. The 112-inch height is the critical spec here — it puts your beacon and callpoint station above vehicle sightlines and temporary equipment, so an emergency call doesn't get missed because someone parked a truck in front of the pole. The aluminum 6061-T6 construction means no rust maintenance in outdoor environments; that matters when your facility manager isn't going to repaint a tower every three years.

Technical Highlights:

• 112-inch height with 8x8 footprint: Achieves visibility and audible reach across large parking areas without consuming valuable ground space or requiring facade mounting — critical when you're retrofitting assistance stations into existing lots.
• 24V DC beacon and station illumination: Single voltage eliminates transformer logic and allows you to source power from the main emergency panel with standard Class 2 wiring — typical practice in facilities with integrated emergency communication systems.
• UL-514-A listed electrical enclosure: Passes code inspection without exception; the listing covers non-hazardous locations, which covers 99% of public-access facilities. If you hit an AHJ (Authority Having Jurisdiction) that requires third-party verification, this is your ticket.
• 68 lbs total weight: Heavy enough to be stable in wind, light enough that two people can install without mechanical lifting — a practical sweet spot for fixed-location outdoor deployments.

Deployment Considerations:

• Foundation depth is driven by your local wind zone and mounted equipment weight. Get a structural engineer or Aiphone pre-sales to run load calculations for your region — skimping on footing depth is how towers fail during storms.
• The electrical box capacity is generous, but your 24V power supply amperage is the real constraint. If you're mounting a siren, beacon, and two-way callpoint, verify that your power supply can handle simultaneous draw — peak current spikes when the siren triggers.

Deploy the TW-TA in parking structures, loading docks, and outdoor campuses where assistance callpoints and emergency beacons need height without rooftop or wall mounting. The aluminum construction earns its cost in coastal and humid regions where maintenance budgets are tight.