Aiphone LE-A Surface Mount Sub Station

Aiphone LE-A Surface Mount Sub Station

The Aiphone LE-A is a surface-mounted sub station engineered for distributed voice communication in multi-unit facilities. This wall-mount unit integrates into Aiphone LE series open voice intercom architectures where multiple stations need reliable talk-back capability without complex wiring infrastructure.

Overview

The LE-A (often searched as LE A) operates as a remote station on the LE series backbone, letting you extend voice communication to secondary locations without running dedicated trunk lines to each endpoint. Common deployments include office clusters, building entrance areas, maintenance zones, and service windows where one-way paging or simple two-way voice exchange is sufficient. The compact profile—6-5/16" high by 5-3/16" wide by 13/16" deep—fits standard wall boxes or surface-mount frames, reducing installation labor compared to recessed mounting.

Key Features & Specifications

• Surface Mount Form Factor: Mounts flush to any standard wall without cutting or framing. Simplifies retrofit installations in existing facilities where breaking drywall or concrete is not feasible. The shallow 13/16" depth means minimal protrusion, so the unit won't interfere with door swing or create a snag point in high-traffic areas.
• 3-Conductor Shielded Cable Architecture: Connects to the LE series trunk via standard voice-grade wiring (Aiphone #822203 for 22 AWG or #821803 for 18 AWG recommended). Shielded topology reduces EMI ingress in industrial or electrically noisy environments—relevant if the intercom runs near motor drives, welding equipment, or high-voltage switchgear. No special twisted-pair cabling required; existing 3-wire runs can often be repurposed.
• Open Voice Intercom Topology: The LE-A participates in Aiphone's traditional open-line voice protocol, meaning any station can broadcast to all others without dial-up or circuit-switching latency. Ideal for rapid emergency alerts, shift changes, or general announcements. No IP network dependency—operates on isolated, vendor-controlled wiring, reducing cyber risk in sensitive facilities.
• Compact, Rugged Plastic Enclosure: Housing is designed for typical office and light industrial environments. Not rated for outdoor or washdown duty—if you need rain or chemical spray resistance, specify an outdoor station from the LE series instead.
• Low Power Draw: Sub stations in the LE series are passive or low-power devices, meaning installation does not require dedicated power supplies at every location. This reduces wiring load and simplifies permit applications in facilities with strict electrical codes.
• Integration with LE Series Master Stations: The LE-A works in tandem with LE series master units (such as the Aiphone LE master station), which handle amplification, switching, and call routing. You configure talk-group membership at the master; individual sub stations inherit their assigned destinations.

Installation & Wiring Considerations

Mount the LE-A to a standard single-gang wall box or surface-mount bracket using the provided fasteners. Route the 3-conductor cable back to the LE series master station or intermediate relay point. Cable runs should not exceed length limits specified in the master station documentation—typically 500–1000 feet depending on gauge and load. In electrically noisy facilities, run the shielded cable in separate conduit from power lines or use ferrite clamps at entry points to suppress high-frequency noise coupling.

The LE-A does not require individual power termination; power is delivered over the 3-conductor line from the master unit. This simplifies rough-in and reduces the number of electrical circuits needed. Confirm that the master station power supply is sized to handle the aggregate load of all connected sub stations.

Deployment Context

The LE-A suits facilities with simple, broadcast-centric communication needs and limited IT infrastructure. Banks, small warehouses, manufacturing floors, and multi-tenant buildings often deploy LE series systems because they operate independently of network uptime and require minimal training. If your facility already has an Aiphone LE series master in place, adding a sub station is a low-cost way to extend voice coverage without running a new trunk or upgrading to IP phones.

When to Choose a Different Model

If you need individual call routing, caller ID, or integration with a telephone exchange, evaluate a different station type within the LE series or consider stepping up to an IP-based Aiphone offering. If the environment is outdoors, subject to washdown, or requires vandal resistance, select a heavy-duty or outdoor variant instead. For facilities already running corporate VoIP, networked Aiphone IP stations integrate directly with standard PBX systems and offer more flexibility than the traditional open-line LE architecture.

Frequently Asked Questions

Q: Can I use standard telephone cable (RJ-11) to connect the LE-A?

A: No. The LE-A requires a 3-conductor shielded cable as specified in the LE series documentation. Standard telephone cable lacks the shielding and wire gauge needed for reliable voice transmission over the open-line topology. Use Aiphone part #822203 or #821803.

Q: How many LE-A sub stations can I connect to one LE series master?

A: The number depends on the master station model and its power supply rating. Refer to the LE series master station documentation for the maximum sub-station load. Overloading the master will result in poor audio quality and potential station dropout.

Q: Is the LE-A weatherproof?

A: No. The LE-A is designed for indoor installation in typical office and light industrial environments. For outdoor or washdown applications, select an outdoor-rated station from the Aiphone intercom family.

Q: Can I retrofit the LE-A into an existing LE series installation?

A: Yes, as long as the LE series master station has sufficient available capacity and the wiring infrastructure supports an additional 3-conductor run. The LE-A connects in parallel with other sub stations on the same trunk, so no reconfiguration of the master is needed—integration is plug-and-play.

Q: What is the typical cable run length limitation for the LE-A?

A: Cable runs are typically limited to 500–1000 feet, depending on wire gauge (18 AWG vs. 22 AWG) and the master station's output impedance. Consult the LE series master documentation or contact Aiphone technical support for your specific configuration.

Ted Perry

Perspective based on aggregated IP Security Depot and affiliated engineering team experience.

The Aiphone LE-A is a straightforward, passive sub station for facilities already committed to the LE series open-voice topology. It's not a feature-rich device—it's a relay point. What matters is whether your installation can absorb an additional 3-conductor run and whether the master station has available output capacity. The 6-5/16" × 5-3/16" × 13/16" form factor and surface-mount design make retrofit simple in most office and light industrial environments.

Technical Highlights:

• 3-Conductor Shielded Cable (Aiphone #822203 or #821803): Reduces EMI coupling in noisy electrical environments and allows cable runs of 500–1000 feet depending on gauge. Shielding matters if the intercom trunk runs parallel to motor or welding gear—unshielded pairs will pick up 60 Hz hum and high-frequency noise.
• Surface-Mount Enclosure (13/16" Depth): Mounts flush to standard wall boxes without recessing, which eliminates cutting labor in retrofit scenarios. The shallow depth prevents interference with door hardware or high-traffic areas.
• Passive/Low-Power Design: No individual power supply required at the station; power is delivered over the 3-conductor trunk from the master. This simplifies electrical rough-in and reduces the total circuit load on the facility's service panel.

Deployment Considerations:

• The LE-A is a passive receiver on the master's trunk. Confirm master station output impedance and maximum sub-station load before adding units—exceeding capacity degrades audio quality across the entire system.
• Cable run length is the primary limitation. If your site requires runs longer than 1000 feet, you may need a relay amplifier or a different architecture (such as IP-based stations). Verify cable routing to avoid parallel runs with AC power or high-voltage equipment.

Deploy the LE-A in facilities where broadcast-style communication is sufficient and network infrastructure is either absent or intentionally isolated. Small warehouses, bank branch offices, and multi-tenant buildings with simple shift-change or emergency-alert requirements often find the LE series cost-effective and reliable. Avoid this model if you need caller ID, call routing, or integration with a corporate PBX—those features require a different station type or technology platform.