Wireless Bridge 868 MHz

The STEVAL-IDI004V2 wireless bridge evaluation kit is an Internet of Things (IoT) Home Bridge which supports the Wi-Fi, Sub-GHz, Bluetooth and NFC communication protocols. The device is suitable for various smart home, smart city and industrial applications.

The system uses an STM32F103 microcontroller as a bridge between the various communications modules. The Wi-Fi, Bluetooth and Sub-GHz certified modules are connected through a UART interface to the STM32 microcontroller. The NFC transceiver module is connected through an SPI interface.

Key Features

  • STM32F103 microcontroller as bridge between communication protocols
  • SPWF01SA.11 module for Wi-Fi communication:
    • 2.4 GHz IEEE 802.11 b/g/n Wi-Fi
    • Pre-certified RF module (FCC, IC, CE)
    • Integrated TCP/IP
    • AT commands
    • TLS/SSL for end-to-end security
    • Over-the-air firmware updates
  • SP1ML-868 module for Sub-GHz RF communication:
    • 868 MHz ETSI-certified module
    • Based on Sub-GHz SPIRIT1 transceiver, STM32L1 ULP MCU and balun (BALF-SPI-01D3)
    • Chip antenna
    • Simple AT commands
  • SPBT2632 module for Bluetooth communication:
    • Bluetooth® Classic 3.0 version
    • AT commands
    • CE, FCC, IC, TELEC certified
    • Low-power mode supported
  • Supports NFC communication with the CR95HF and 13.56 MHz inductive etched antenna
  • Configuration using a PC GUI (by request) through USB VCOM
  • Android application to access sensor node data via Bluetooth on request
  • Works as a root node for the mesh network using sensor node evaluation board (part number STEVAL -IDI002V2/3V2)
  • RoHS compliant




Technical Documentation

Product Specifications
Description Version Size
DB2684 DB2684: Wireless bridge 868 MHz 2.0 367 KB
User Manuals
Description Version Size
UM1990 UM1990: Wireless Bridge 868 MHz 3.0 2 MB

Hardware Resources

Board Manufacturing Specifications
Description Version Size
STEVAL-IDI004V2 gerber files 1.0 497 KB
Bill of Materials
Description Version Size
Schematic Pack
Description Version Size
STEVAL-IDI004V2 schematic 1.0 176 KB


License Agreement
Description Version Size
Evaluation products license agreement 1.4 128 KB

Tools and Software

Embedded Software
Evaluation Tool Software
Support & Community

Sample & Buy

Part Number Core Product Marketing Status Unit Price (US$) * Quantity ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
STEVAL-IDI004V2 STM32F103RET6; SPBT2632C2A.AT2; SP1ML-868; SPWF01SA.11 Active 82.08 1 5A002A1B3 5A002A1B3 ITALY MORE INFO Buy Direct Add to cart DISTRIBUTOR AVAILABILITY

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

Quality & Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STEVAL-IDI004V2 ActiveCARDIndustrialEcopack2

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.