Aiphone DA-1DS vs Aiphone NI-JA: Specification Comparison
Both the Aiphone DA-1DS and the Aiphone NI-JA are audio-only, hands-free, two-way door stations designed for outdoor access-control entry points — the same product class and device type. The DA-1DS is a single-call, aluminum-housed unit built for surface-wall mounting in single-tenant or small multi-tenant applications, while the NI-JA is a 2-gang stainless steel station engineered for flush or surface mounting in environments demanding higher vandal and corrosion resistance, with compatibility limited to the Aiphone NI-series master stations. Buyers choosing between them are typically weighing housing material, wiring requirements, system compatibility, and installation method.
In This Guide
- Which door station supports longer wiring runs and what cable does each require?
- How do the two stations differ in housing material, environmental rating, and vandal resistance?
- What are the installation and system-compatibility differences between the two stations?
- Which should you choose: the DA-1DS or the NI-JA?
- Side-by-Side Specs
- FAQ
Which door station supports longer wiring runs and what cable does each require?
The DA-1DS offers a significantly longer maximum wiring distance: 1,020 feet using 18 AWG cable, or 360 feet with 22 AWG, using 2-conductor shielded or PE-insulated unshielded wire. This flexibility in conductor count and gauge gives installers more choices in cable inventory and conduit fill planning.
The NI-JA specifies a maximum communication distance of 650 feet, and mandates a 3-conductor overall-shielded cable — specifically Aiphone part #821803 (18 AWG). The additional conductor and proprietary cable requirement adds a procurement dependency and slightly increases conduit fill, but the shielded 3-conductor run is standard practice for NI-series NIM master station wiring.
For long-run or budget-constrained installations, the DA-1DS's 1,020-foot ceiling with commodity 2-conductor cable is the practical advantage. The NI-JA's 650-foot cap with mandatory Aiphone cable suits NI-series system builds where standardized infrastructure is already in place.
How do the two stations differ in housing material, environmental rating, and vandal resistance?
The DA-1DS uses a weather-resistant aluminum cover and is rated for outdoor use across an operating temperature of 14°F to 140°F (−10°C to 60°C). Aluminum construction provides good corrosion resistance in typical outdoor environments. No UL listing or vandal-resistance claim is stated in the provided specifications.
The NI-JA is constructed from stainless steel — specifically described as 300-series, which offers superior resistance to salt spray, humidity, and oxidation compared to aluminum. The NI-JA is characterized as both weather- and vandal-resistant, and carries a UL listing per the provided specifications. No operating temperature range is stated in the NI-JA spec data.
For coastal, high-humidity, or high-abuse installations, the NI-JA's stainless steel construction and vandal-resistance rating represent a material durability advantage. The DA-1DS's aluminum housing is appropriate for standard outdoor climates where a UL listing and stainless construction are not mandated by the project spec.
What are the installation and system-compatibility differences between the two stations?
The DA-1DS mounts via surface wall-mount only, fastening directly to a wall without a back box dependency. It supports a single-call configuration with a direct-select button for single-tenant routing, and its 2-conductor wiring makes it broadly adaptable to Aiphone DA-series master stations. No specific master-station compatibility list is provided in the specs beyond the DA-series implied by the system designation.
The NI-JA offers two installation paths: flush-mount into a standard 2-gang electrical box, or surface-mount using the optional SBX-2G/A bracket. The spec explicitly lists compatibility with the Aiphone NIM-20B and NIM-40B master stations, tying it firmly to the NI-series platform. The 2-gang footprint is a common commercial rough-in, making flush-mount retrofit straightforward where a 2-gang box is already installed.
Installers already deploying NI-series master stations should select the NI-JA for system coherence. The DA-1DS's surface-only mount and simpler 2-conductor wiring suit greenfield or retrofit single-tenant entries where a back box is not present and the system platform permits it. Both units carry a 2-year warranty.
Which should you choose: the DA-1DS or the NI-JA?
Our take: The DA-1DS is the stronger choice when maximum wiring distance, installation simplicity, and cable flexibility are the primary drivers. It reaches 1,020 feet on 18 AWG two-conductor wire versus the NI-JA's 650-foot cap on mandatory 3-conductor Aiphone-specific cable — a 57% longer run with a simpler cable type. However, the NI-JA leads on durability and compliance: its 300-series stainless steel housing with stated vandal resistance and UL listing outperforms the DA-1DS's aluminum cover in high-abuse or corrosive environments, where no UL listing is documented for the DA-1DS. The NI-JA also provides a flush-mount option for a cleaner architectural finish that the surface-only DA-1DS cannot match. Platform lock-in is decisive: the NI-JA is validated against the Aiphone NIM-20B and NIM-40B; the DA-1DS targets the DA-series ecosystem. Specify the NI-JA for NI-series builds, coastal or vandal-prone sites, and flush-mount requirements; specify the DA-1DS for long-run single-tenant entries on DA-series systems.
Side-by-Side Comparison
Spec-for-spec, from manufacturer data.
| Specification | Aiphone DA-1DS | Aiphone NI-JA |
|---|---|---|
| Product Class | Audio Door Station | Audio Door Station |
| SKU | DA-1DS | NI-JA |
| Housing Material | Aluminum weather-resistant cover | 300-series stainless steel |
| Vandal Resistance | — | Yes (weather and vandal-resistant) |
| UL Listed | — | Yes |
| Audio Type | Hands-free two-way | Hands-free two-way |
| Operating Temperature | 14°F to 140°F (−10°C to 60°C) | — |
| Max Wiring Distance | 1,020 ft (18 AWG) / 360 ft (22 AWG) | 650 ft |
| Cable Requirement | 2-conductor shielded or PE unshielded | 3-conductor overall shield (Aiphone #821803) |
| Mount Type | Surface wall mount only | Flush (2-gang box) or surface (SBX-2G/A) |
| Form Factor | Single-call door station | 2-gang door station |
| Compatible Master Stations | DA-series (implied by system) | Aiphone NIM-20B, NIM-40B |
| Door Strike Voltage | 9.5–20V AC at 70Ω or higher | — |
| Environment Rating | Outdoor | Outdoor |
| Warranty | 2-Year | 2-Year |
| Conductor Count | 2-conductor | 3-conductor |
Frequently Asked Questions
Which should you choose: the DA-1DS or the NI-JA?
The DA-1DS is the stronger choice when maximum wiring distance, installation simplicity, and cable flexibility are the primary drivers. It reaches 1,020 feet on 18 AWG two-conductor wire versus the NI-JA's 650-foot cap on mandatory 3-conductor Aiphone-specific cable — a 57% longer run with a simpler cable type. However, the NI-JA leads on durability and compliance: its 300-series stainless steel housing with stated vandal resistance and UL listing outperforms the DA-1DS's aluminum cover in high-abuse or corrosive environments, where no UL listing is documented for the DA-1DS. The NI-JA also provides a flush-mount option for a cleaner architectural finish that the surface-only DA-1DS cannot match. Platform lock-in is decisive: the NI-JA is validated against the Aiphone NIM-20B and NIM-40B; the DA-1DS targets the DA-series ecosystem. Specify the NI-JA for NI-series builds, coastal or vandal-prone sites, and flush-mount requirements; specify the DA-1DS for long-run single-tenant entries on DA-series systems.
Can I use the DA-1DS or NI-JA with any Aiphone master station?
No. The NI-JA specifies compatibility with the Aiphone NIM-20B and NIM-40B master stations only, and requires Aiphone's proprietary 3-conductor shielded cable (#821803). The DA-1DS is designed for the DA-series system platform. Mixing stations across incompatible Aiphone series is not supported by the provided specifications, and doing so risks no audio or system faults.
Which station is better suited for a harsh coastal or high-humidity environment?
The NI-JA is the better fit. Its 300-series stainless steel construction is explicitly described as resistant to salt spray and humidity, and the unit carries a UL listing and vandal-resistance rating. The DA-1DS uses an aluminum cover rated for outdoor use, but no corrosion-class rating, vandal-resistance claim, or UL listing appears in its provided specifications.
Is the DA-1DS or NI-JA better for a long cable run in a large facility?
The DA-1DS supports up to 1,020 feet of run with 18 AWG 2-conductor cable — significantly longer than the NI-JA's 650-foot maximum using 18 AWG 3-conductor shielded cable. If your run exceeds 650 feet, the DA-1DS (on a compatible DA-series system) is the only option of the two that meets the distance requirement per the published specifications.
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