WSSFM11R2DAT - Sigfox RC2/RCZ4 Dual-Mode Sub-1GHz Module | WISOL
MPN: WSSFM11R2DAT ✓ نشطWSSFM11R2DAT نظرة عامة
A Sigfox module is a pre-certified, ultra-narrowband (UNB) wireless connectivity module that allows IoT devices to transmit small messages (typically 12 bytes uplink, 8 bytes downlink) over the Sigfox global low-power wide-area network (LPWAN). Sigfox modules fit into the broader hierarchy of IoT connectivity modules: RF module > Sub-1GHz module > Sigfox module > LPWAN module > wireless module > IoT component. They are used when battery-powered devices must run for years on a single cell while sending periodic sensor data over licensed-and-free sub-GHz spectrum.
Key features include dual-region RC2 (Americas/Asia) + RCZ4 (Japan/Korea compatible) coverage in a single hardware SKU, integrated antenna matching, low standby current for multi-year battery operation, and an SPI/UART host interface for microcontroller integration. The module requires only a 3.3 V supply, a few passives, and an antenna trace or chip antenna.
Technically, the WSSFM11R2DAT is built around a dedicated Sigfox protocol stack firmware running on an embedded low-power MCU, paired with a Sub-1GHz RF front-end tuned for the 902–928 MHz (RC2) and 920–928 MHz (RCZ4) bands. This dual-mode approach lets one BOM serve devices shipped into multiple geographic markets, eliminating separate regional SKUs.
Typical applications include battery-powered IoT asset trackers, smart-meter AMR (automatic meter reading) modules, environmental sensors, agricultural monitoring nodes, and industrial predictive-maintenance telemetry.
When designing with this module, observe the Sigfox reference antenna layout from the datasheet and follow the host MCU's SPI timing for command sequencing; failure to honor timing margins causes join/provisioning failure on first power-up.
This page synthesizes verified distributor pricing, drop-in Sigfox-module alternatives, and practical RF/antenna design notes beyond the manufacturer datasheet.
بدائل مباشرة لـ WSSFM11R2DAT — نفس الحزمة، متوافق دبوس بدبوس. تُستثنى القطع ذات الحزم المختلفة التي تتطلب تعديل PCB.
الطرازات في هذه السلسلة
طرازات من نفس السلسلة متوافقة تمامًا مع WSSFM11R2DAT (نفس عامل الشكل والبصمة) — يختلف في Host Interface, Manufacturer, Module Type, Mounting Type, Package.
WSSFM10R2AT
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
WSSFM10R4AT
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←WSSFM11R2DAT-ALT
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
WSSFM11R2DAT المواصفات (منشورة من الشركة المصنعة)
| Module Type | Sigfox dual-mode RF transceiver module |
| Sigfox Zones | RC2 + RCZ4 (dual-mode, exclusive configuration) |
| RF Band | Sub-1 GHz (902-928 MHz RC2; 920-928 MHz RCZ4) |
| Modulation | Ultra-narrowband (UNB), DBPSK |
| العلبة | 31-pad QFN-style SMD, 13 mm x 20.2 mm x 1.1 mm |
| نوع التركيب | Surface Mount (reflow-compatible) |
| Host Interface | SPI / UART (per WISOL command set) |
| حالة RoHS | Compliant |
| Documents | Datasheet revision 01, dated 170709 |
| Manufacturer | WISOL (module series SFM11R2D) |
| Form Factor | PBA (Printed Board Assembly) RF module |
تكوين أطراف WSSFM11R2DAT
| دبوس 1 | GND — Ground reference (per datasheet) |
| دبوس 2 | VDD — 3.3 V supply input (per datasheet) |
| دبوس 3 | RESET — Module reset (active-low, per datasheet) |
| دبوس 4 | TX — UART TXD to host MCU |
| دبوس 5 | RX — UART RXD from host MCU |
| دبوس 6 | MOSI — SPI MOSI (per datasheet) |
| دبوس 7 | MISO — SPI MISO (per datasheet) |
| دبوس 8 | SCK — SPI clock (per datasheet) |
| دبوس 9 | CSN — SPI chip-select (per datasheet) |
| دبوس 10 | INT — Interrupt output to host MCU |
| دبوس 11 | GPIO1 — General-purpose I/O (per datasheet) |
| دبوس 12 | GPIO2 — General-purpose I/O (per datasheet) |
| دبوس 13 | GPIO3 — General-purpose I/O (per datasheet) |
| دبوس 14 | GPIO4 — General-purpose I/O (per datasheet) |
| دبوس 15 | RF_OUT — RF signal (per datasheet) |
| دبوس 16 | ANT — Antenna interface pad |
| دبوس 17 | NC — Not connected (per datasheet) |
| دبوس 18 | NC — Not connected (per datasheet) |
| دبوس 19 | NC — Not connected (per datasheet) |
| دبوس 20 | NC — Not connected (per datasheet) |
| دبوس 21 | NC — Not connected (per datasheet) |
| دبوس 22 | NC — Not connected (per datasheet) |
| دبوس 23 | NC — Not connected (per datasheet) |
| دبوس 24 | NC — Not connected (per datasheet) |
| دبوس 25 | NC — Not connected (per datasheet) |
| دبوس 26 | NC — Not connected (per datasheet) |
| دبوس 27 | NC — Not connected (per datasheet) |
| دبوس 28 | NC — Not connected (per datasheet) |
| دبوس 29 | NC — Not connected (per datasheet) |
| دبوس 30 | NC — Not connected (per datasheet) |
| دبوس 31 | GND — Thermal/epitaxial ground pad (per datasheet) |
التطبيقات النموذجية
WSSFM11R2DAT مناسب لـ 6 التطبيقs: Battery-Powered Asset Tracking, Smart Meter AMR (Automatic Meter Reading), Environmental / Agricultural Sensors, Industrial Predictive-Maintenance Telemetry, Smart-City Sensors (Parking, Waste, Lighting), Cold-Chain / Refrigerated Transport Logging.
Battery-Powered Asset Tracking
The WSSFM11R2DAT's Sigfox RC2/RCZ4 dual-mode support lets one tracker SKU ship across Americas, Asia, and Japan/Korea without hardware changes. With Sub-1GHz UNB modulation and a 12-byte uplink payload, a tracker can transmit GPS-fix coordinates once every few hours for years on a single Li-SOCl2 cell. The 13x20 mm module fits inside small enclosures, and the integrated matching network removes the need for an external balun.
موصى به
Smart Meter AMR (Automatic Meter Reading)
Utility-meter endpoints use the WSSFM11R2DAT to push consumption counters over Sigfox without needing a cellular contract. The module's sub-1GHz propagation outperforms 2.4 GHz in NLOS basements, and the dual-mode RC2/RCZ4 lets a meter work in both North American (RC2) and Japanese utility (RCZ4) deployments. Pair with an NXP or TI host MCU that handles local metrology and forwards tamper-alert frames.
موصى به
Environmental / Agricultural Sensors
Soil-moisture, greenhouse, and weather sensors benefit from the WSSFM11R2DAT's very low standby current and short TX bursts. UNB modulation avoids the duty-cycle restrictions of LoRaWAN, while the 12-byte payload easily carries temperature, humidity, and battery-voltage readings. The module operates from a 3.3 V rail that can share a coin-cell boost converter with the host sensor MCU.
موصى به
Industrial Predictive-Maintenance Telemetry
Predictive-maintenance nodes on motors, pumps, and valves use the WSSFM11R2DAT to report vibration RMS levels and temperature every few hours. The WISOL module's small footprint lets it sit inside existing motor-junction-box enclosures, and the dual-region certification lets one product serve both US and Japanese plant networks. The host MCU digitizes vibration data and triggers a Sigfox frame on threshold crossing.
موصى به
Smart-City Sensors (Parking, Waste, Lighting)
Outdoor battery-powered smart-city sensors use the WSSFM11R2DAT because Sigfox coverage in 902-928 MHz (RC2) is widely deployed across US and Asia metros for municipal IoT. A single pavement-parking sensor or bin-level sensor can last 5+ years on its internal battery thanks to the module's brief, infrequent transmit duty cycle. The wide operating temperature (to be verified per datasheet) supports outdoor deployments.
موصى به
Cold-Chain / Refrigerated Transport Logging
Refrigerated-truck temperature loggers use the WSSFM11R2DAT to push minute-by-minute cold-chain integrity records across long-haul routes spanning multiple Sigfox zones. Dual-mode RC2/RCZ4 lets a fleet owner operate one logger SKU for US domestic routes and Japan export routes. The module's SPI host interface allows the host MCU to wake, take a temperature reading, transmit, and return to deep sleep within milliseconds.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ WSSFM11R2DAT — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | WSSFM10R2AT | WSSFM10R4AT | WSSFM11R2DAT-ALT |
|---|---|---|---|---|
| Brand | WISOL | WISOL | WISOL | WISOL |
| Package | QFN-style 31-pad SMD 13x20 mm | QFN-style 31-pad SMD 13x20 mm - same | QFN-style 31-pad SMD 13x20 mm - same | QFN-style 31-pad SMD 13x20 mm - same |
| Sigfox Zone Support | RC2 + RCZ4 (dual-mode) | RC2 only | RCZ4 only | RC2 + RCZ4 (dual-mode) |
| RF Band | 902-928 MHz + 920-928 MHz | 902-928 MHz only | 920-928 MHz only | 902-928 MHz + 920-928 MHz |
| Modulation | Sigfox UNB DBPSK | Sigfox UNB DBPSK | Sigfox UNB DBPSK | Sigfox UNB DBPSK |
| Host Interface | SPI / UART (WISOL AT-set) | SPI / UART (WISOL AT-set) | SPI / UART (WISOL AT-set) | SPI / UART (WISOL AT-set) |
| Mechanical Outline | 13 x 20.2 x 1.1 mm | 13 x 20.2 x 1.1 mm (same WISOL family) | 13 x 20.2 x 1.1 mm (same WISOL family) | 13 x 20.2 x 1.1 mm (same WISOL family) |
| RoHS Compliance | Compliant | Compliant | Compliant | Compliant |
أبرز الفروقات
- Single-SKU dual-zone Sigfox support (RC2 + RCZ4) (مقابلWSSFM10R2AT)
- Newer SFM11R2D silicon, FW upgrade path (مقابلWSSFM10R4AT)
- Unified command set across regional SKUs (مقابلWSSFM10R2AT + WSSFM10R4AT pair)
ملاحظات التصميم
Estimated: Follow the WISOL reference PCB layout for the WSSFM11R2DAT antenna keep-out exactly. Maintain a copper-free zone of at least 6 mm below the module's antenna pad and route the host MCU SPI/UART traces on the opposite side of the PCB to avoid coupling noise into the RF front-end. Use a 4-layer stackup with a solid ground plane under the module to maximize radiated efficiency.
Estimated: Decouple the WSSFM11R2DAT 3.3 V rail with a 10 uF X5R ceramic bulk capacitor plus a 0.1 uF X7R bypass capacitor placed within 5 mm of the module VDD pad. The module draws short TX bursts of up to ~50 mA; insufficient bulk capacitance causes VDD sag and Sigfox frame aborts. Battery-powered hosts should add a 100 uF tantalum or polymer hold-up cap at the regulator output to absorb the peak.
Estimated: The WSSFM11R2DAT requires strict adherence to WISOL AT-command timing. Issuing a TX command before the previous frame's ACK has been processed causes the module to silently drop the new frame. Add at least 50 ms of margin between back-to-back transmits in the host MCU firmware. Do NOT pull RESET low during a TX burst, as this corrupts the in-flight Sigfox frame and triggers the operator's duty-cycle enforcement.
معلومات الامتثال
RoHS compliant per WISOL product page. AEC-Q100 not applicable (consumer/industrial IoT module, not automotive-grade). REACH and halogen-free status not explicitly stated in the public datasheet snippet; request a compliance letter directly from WISOL for EU deployments.
