WSSFM11R2DAT - Sigfox RC2/RCZ4 Dual-Mode Sub-1GHz Module | WISOL
MPN: WSSFM11R2DAT ✓ AktifWSSFM11R2DAT Ringkasan
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.
Alternatif penggantian untuk WSSFM11R2DAT — paket yang sama, pin-pada-pin kompatibel. Bagian paket yang berbeda memerlukan kerja ulang PCB diabaikan.
Variasi di dalam seri ini
Model-series yang sama yang kompatibel dengan penggantian WSSFM11R2DAT (sama faktor bentuk dan footprint) — berbeda di dalam Host Interface, Manufacturer, Module Type, Mounting Type, Package.
WSSFM10R2AT
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
WSSFM10R4AT
✅ Drop-InKontak untuk harga
Lihat Datasheet →WSSFM11R2DAT-ALT
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
WSSFM11R2DAT Spesifikasi (diterbitkan produsen)
| 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 |
| Paket | 31-pad QFN-style SMD, 13 mm x 20.2 mm x 1.1 mm |
| Tipe Mounting | Surface Mount (reflow-compatible) |
| Host Interface | SPI / UART (per WISOL command set) |
| Status RoHS | Compliant |
| Documents | Datasheet revision 01, dated 170709 |
| Manufacturer | WISOL (module series SFM11R2D) |
| Form Factor | PBA (Printed Board Assembly) RF module |
Konfigurasi Pin WSSFM11R2DAT
| Pin produk 1 | GND — Ground reference (per datasheet) |
| Pin produk 2 | VDD — 3.3 V supply input (per datasheet) |
| Pin produk 3 | RESET — Module reset (active-low, per datasheet) |
| Pin produk 4 | TX — UART TXD to host MCU |
| Pin produk 5 | RX — UART RXD from host MCU |
| Pin produk 6 | MOSI — SPI MOSI (per datasheet) |
| Pin produk 7 | MISO — SPI MISO (per datasheet) |
| Pin produk 8 | SCK — SPI clock (per datasheet) |
| Pin produk 9 | CSN — SPI chip-select (per datasheet) |
| Pin produk 10 | INT — Interrupt output to host MCU |
| Pin produk 11 | GPIO1 — General-purpose I/O (per datasheet) |
| Pin produk 12 | GPIO2 — General-purpose I/O (per datasheet) |
| Pin produk 13 | GPIO3 — General-purpose I/O (per datasheet) |
| Pin produk 14 | GPIO4 — General-purpose I/O (per datasheet) |
| Pin produk 15 | RF_OUT — RF signal (per datasheet) |
| Pin produk 16 | ANT — Antenna interface pad |
| Pin produk 17 | NC — Not connected (per datasheet) |
| Pin produk 18 | NC — Not connected (per datasheet) |
| Pin produk 19 | NC — Not connected (per datasheet) |
| Pin produk 20 | NC — Not connected (per datasheet) |
| Pin produk 21 | NC — Not connected (per datasheet) |
| Pin produk 22 | NC — Not connected (per datasheet) |
| Pin produk 23 | NC — Not connected (per datasheet) |
| Pin produk 24 | NC — Not connected (per datasheet) |
| Pin produk 25 | NC — Not connected (per datasheet) |
| Pin produk 26 | NC — Not connected (per datasheet) |
| Pin produk 27 | NC — Not connected (per datasheet) |
| Pin produk 28 | NC — Not connected (per datasheet) |
| Pin produk 29 | NC — Not connected (per datasheet) |
| Pin produk 30 | NC — Not connected (per datasheet) |
| Pin produk 31 | GND — Thermal/epitaxial ground pad (per datasheet) |
Aplikasi Umum
WSSFM11R2DAT cocok untuk 6 aplikasis: 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.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
Ringkasan Produk Direkomendasikan
Data referensi engineering untuk WSSFM11R2DAT — pembandingan, panduan desain, dan informasi konformitas.
Panduan Pemilihan
Pembandingan dengan Alternatif
| Parameter Umum | Produk Ini | 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 |
Diferensiator Kunci
- Single-SKU dual-zone Sigfox support (RC2 + RCZ4) (vsWSSFM10R2AT)
- Newer SFM11R2D silicon, FW upgrade path (vsWSSFM10R4AT)
- Unified command set across regional SKUs (vsWSSFM10R2AT + WSSFM10R4AT pair)
Catatan Desain
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.
Informasi Konformitas
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.
