WHM200A - 802.11ah Wi-Fi HaLow Module 15Mbps | Newracom
部品番号: WHM200A ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $19.5 | $19.50 |
| 10 | $18.2 | $182.00 |
| 100 | $16.8 | $1,680.00 |
| 500 | $15.4 | $7,700.00 |
| 1,000 | $14.1 | $14,100.00 |
WHM200A 概要
Wi-Fi HaLow is the IEEE 802.11ah variant of Wi-Fi designed specifically for the Internet of Things. Unlike conventional 2.4 GHz Wi-Fi, Sub-1 GHz propagation penetrates walls and foliage far more effectively and achieves much longer range at lower power, positioning Wi-Fi HaLow in the wireless hierarchy between short-range Wi-Fi/Bluetooth and licensed LPWAN technologies such as LoRa and NB-IoT.
Key features of the WHM200A include the NRC7394 SoC with an ARM Cortex-M3 processor clocked at 30 MHz, 1088 KB of RAM, OFDM modulation supporting BPSK, QPSK, 16QAM and 64QAM, and an integrated RF switch plus internal power amplifier that boosts transmit power up to 28 dBm for the US market. This high-power variant is optimized for long-range, high-penetration IoT links where standard low-power HaLow modules lack link budget.
The 802.11ah MAC/PHY architecture retains native IP connectivity and standard Wi-Fi security, allowing direct integration into existing IP networks without gateways translating proprietary protocols. The SMD-pad interface simplifies assembly on standard PCBs using reflow soldering.
Typical applications include smart utility metering, smart-city infrastructure, agricultural sensor networks, industrial monitoring, and campus-wide security systems - all scenarios demanding kilometer-scale range, multi-year battery life, and connection of thousands of devices per access point.
Design consideration: the +28 dBm PA significantly increases transmit current draw; RF layout must respect the 902-928 MHz antenna matching network recommendations in the user manual, and regulatory use is limited to the US 902-928 MHz band.
This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
ドロップイン代替品: WHM200A — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
クイック比較ツール — 並列比較する代替部品を選択:
WHM210A
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
WHM100A
✅ ドロップイン📋 参考代替品（カタログ未掲載）
WHM110A
✅ ドロップイン📋 参考代替品（カタログ未掲載）
WHM200A 仕様（メーカー公開）
| Wireless Standard | IEEE 802.11ah (Wi-Fi HaLow) |
| Frequency Band | 902 to 928 MHz |
| Market Variant | US High Power |
| Maximum Data Rate | 15 Mbps (single stream) |
| Transmit Power | +28 dBm (MCS10, PA variant) |
| Receive Sensitivity | -107 dBm minimum (MCS10) |
| Modulation | OFDM with BPSK, QPSK, 16QAM, 64QAM |
| SoC | NRC7394 |
| Processor Core | ARM Cortex-M3 |
| Clock Frequency | 30 MHz |
| RAM | 1088 KB |
| Integrated RF Switch | Yes |
| Internal PA | Yes |
| インターフェースタイプ | SMD PAD |
| Dimensions | 14 x 17.5 x 2.8 mm |
| 実装タイプ | Surface Mount |
| Series | WHM |
WHM200A インターフェースとコネクタ
WHM200A は、メーカーが公開している以下のインターフェースとコネクタを備えています: ワイヤレス。拡張ヘッダーのピン配置、コネクタのピン番号、電気的制限はメーカーのドキュメントで定義されています。
| ワイヤレス | IEEE 802.11ah (Wi-Fi HaLow) |
詳細は メーカー資料 をご参照ください（拡張ヘッダーのピン配置とコネクタのピン番号の詳細）。
主な用途
WHM200A の用途: 6 件s: Smart Utility Metering, Smart City Infrastructure, Agricultural Sensor Networks, Industrial Facility Monitoring, Security and Surveillance Systems, Smart Home and Building Automation.
Smart Utility Metering
The WHM200A fits smart water, gas and electric metering because IEEE 802.11ah was designed for dense device populations - thousands of meters per access point - while the 902 to 928 MHz band penetrates metal meter cabinets and building walls far better than 2.4 GHz Wi-Fi. The -107 dBm receive sensitivity at MCS10 combined with +28 dBm PA output gives the link budget needed for neighborhood-scale networks spanning kilometers. Meters typically transmit small, infrequent payloads, so the module can sleep between reports and the Sub-1 GHz OFDM PHY delivers reliable links at the lowest MCS rates. Its SMD-pad interface allows direct reflow assembly onto the meter main PCB, and native IP connectivity removes the need for proprietary concentrator protocol translation.
おすすめ
Smart City Infrastructure
Smart-city deployments - streetlights, parking sensors, environmental monitors, waste containers - are spread over large areas with obstructed line of sight, which is precisely where the WHM200A's Sub-1 GHz Wi-Fi HaLow link outperforms 2.4 GHz alternatives. The 902 to 928 MHz band provides hundreds of meters to kilometer-scale range per hop with strong diffraction and penetration behavior, and the +28 dBm transmit power adds margin for pole-mounted or underground installations. The ARM Cortex-M3 host with 1088 KB RAM can run application logic directly on-module, and OFDM modulation with BPSK to 64QAM lets the network trade data rate (up to 15 Mbps) for range dynamically. Native IEEE 802.11 security and IP addressing integrate directly with municipal network backbones.
おすすめ
Agricultural Sensor Networks
In agriculture, sensors monitoring soil moisture, weather and irrigation valves are distributed across fields with vegetation, soil and terrain obstructing radio paths. The WHM200A's 902-928 MHz propagation characteristics penetrate crop canopy and tolerate foliage fading much better than higher bands, while -107 dBm receive sensitivity extends battery-powered node range to kilometer scale. The high-power +28 dBm PA is especially valuable for hub/gateway positions that must reach many distant nodes. Low-power sleep modes between OFDM transmissions suit solar or battery nodes reporting a few times per hour. Because 802.11ah is standard Wi-Fi, farm data lands on a normal IP network without a proprietary LoRaWAN-style network server, simplifying integration with farm-management software.
おすすめ
Industrial Facility Monitoring
Factories and warehouses present dense metallic obstructions that cripple 2.4 GHz links; the WHM200A's Sub-1 GHz Wi-Fi HaLow signal penetrates racking, machinery and concrete partitions with far less attenuation, making it suitable for condition-monitoring sensors, asset trackers and environmental telemetry across an entire plant. The 15 Mbps peak rate comfortably handles vibration spectra, thermal imaging thumbnails and event bursts, while the 802.11ah MAC supports many hundreds of nodes per access point. The module's SMD-pad footprint reflows directly onto sensor PCBs, and the internal RF switch plus PA deliver consistent +28 dBm output without external front-end components, reducing bill of materials and RF tuning effort in high-volume industrial builds.
おすすめ
Security and Surveillance Systems
Campus and perimeter security systems need to connect door sensors, motion detectors, panic buttons and low-bandwidth cameras across large outdoor areas. The WHM200A's kilometer-scale link budget from -107 dBm sensitivity and +28 dBm transmit power covers gates, fences and outbuildings from a single HaLow access point, and the 902-928 MHz band's wall penetration keeps indoor sensors connected without repeaters. Peak throughput of 15 Mbps supports compressed video clips from Wi-Fi HaLow cameras at reduced resolution, while alarm and access-control traffic rides reliably at robust low-MCS rates. Standard Wi-Fi security (WPA-family features of the 802.11 stack) and IP addressing let these devices join existing corporate security networks directly.
おすすめ
Smart Home and Building Automation
Whole-home coverage is a classic Wi-Fi pain point; WHM200A's Sub-1 GHz signal traverses multiple walls, floors and appliances on 902-928 MHz, letting a single access point serve locks, thermostats, leak sensors and lighting controllers throughout a house or small building. The 802.11ah standard supports high node density and long sleep cycles, so battery-powered devices achieve multi-year life while remaining IP-addressable. The module's ARM Cortex-M3 with 1088 KB RAM can host device application logic, and the SMD-pad interface at 14 x 17.5 x 2.8 mm fits compact OEM products. Compared with proprietary sub-GHz stacks, HaLow's standard-based approach removes gateway protocol translation and future-proofs the product line.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: WHM200A — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | WHM210A | WHM100A | WHM110A |
|---|---|---|---|---|
| Package | 14 x 17.5 x 2.8 mm SMD PAD | 14 x 17.5 x 2.8 mm SMD - same | 14 x 17.5 x 2.8 mm SMD - same | 14 x 17.5 x 2.8 mm SMD - same |
| Brand | Newracom | Newracom | Newracom | Newracom |
| Wireless Standard | IEEE 802.11ah (Wi-Fi HaLow) | IEEE 802.11ah | IEEE 802.11ah | IEEE 802.11ah |
| Frequency Band / Region | 902-928 MHz (US) | 902-928 MHz (US) | Korea Sub-1 GHz | Korea Sub-1 GHz |
| Transmit Power | +28 dBm (high power, MCS10) | Low power (no high-power PA) | High power | Low power |
| Max Data Rate | 15 Mbps | 15 Mbps | 15 Mbps | 15 Mbps |
| Receive Sensitivity | -107 dBm min (MCS10) | -107 dBm class | -107 dBm class | -107 dBm class |
| SoC / Processor | NRC7394, ARM Cortex-M3, 30 MHz | NRC7394, ARM Cortex-M3 | NRC7394, ARM Cortex-M3 | NRC7394, ARM Cortex-M3 |
| RAM | 1088 KB | 1088 KB | 1088 KB | 1088 KB |
主な差別化要因
- Highest link budget in the WHM US family （vs WHM210A)
- US-band certification-ready high-power operation （vs WHM100A)
- Integrated RF switch and PA reduce BOM （vs WHM110A)
設計ノート
The WHM200A presents its RF port on SMD pads with the internal RF switch and PA already integrated in the NRC7394 SoC, so no external front-end is needed. Follow the 50-ohm controlled-impedance microstrip routing and 902-928 MHz matching network in the manufacturer user manual; keep the antenna trace as short as possible, surround it with ground plane and stitching vias, and keep switching regulators and crystal circuits away from the antenna feed to protect the -107 dBm receive sensitivity.
The high-power PA raising TX output to +28 dBm draws substantially more supply current than the low-power WHM210A during transmit bursts. Size the module's 3.3 V supply and local decoupling (bulk plus 10 uF/0.1 uF ceramics near the supply pads) to handle peak TX current without droop, or output power and EVM will degrade. For battery nodes, prefer robust low-MCS rates to shorten airtime, or choose the WHM210A if +28 dBm link margin is not required.
The WHM200A is the US-market variant for the 902-928 MHz license-exempt band. Do not ship it into Korea, Japan or EU markets - use WHM100A/WHM110A, WHM400A or WHM500A respectively, whose frequency plans and power profiles match those regions. End-product modular approval also depends on antenna selection; changing the antenna type may require a new authorization, so verify with Newracom before changing antennas in production.
コンプライアンス情報
RoHS-compliant SMD construction per JLCPCB part listing. Formal REACH, halogen-free and conflict-minerals declarations must be requested from Newracom.
