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Laird Connectivity


Longer Range BLE-Enabling Next Generation Industrial IoT

Ezurio's new BL653 series enables Industrial OEMs to robustly implement longer range BLE applications in the harshest operating environments. This series of secure low power, microcontroller modules with multi wireless capabilities is the future of wireless Industrial Internet of Things (IIoT) connectivity.

Powered by Nordic’s nRF52833 silicon, the small form factor BL653 modules and DVKs provide for a secure, robust BLE and Cortex -M4F CPU for any OEM’s product design. The BL653 provides you with maximum development flexibility with programming options for the Nordic SDK or Zephyr RTOS, a simple, intuitive AT command set, as well as Ezurio's own smartBASIC environment.

The BL653 series brings out all nRF52833 hardware features and capabilities including USB access, up to +8 dBm transmit power up to 5.5V supply considerations, and NFC tag (type 2 / 4) implementation. Complete regulatory certifications enable faster time to market and reduced development risk completes Ezurio's simplification of your next Bluetooth design!

  • Bluetooth v5.1 Bluetooth Low Energy (BLE) plus NFC
  • Bluetooth v5.2- capable
  • 802.15.4 radio (non-certified – Thread & ZigBee via Nordic SDK or Thread via Zephyr)
  • Widest range of configurable interfaces: UART, I2C, SPI, ADC, GPIO, PWM, FREQ, USB, PDM, and NFC
  • Extended Industrial Temperature Rating (-40° to +105 °C)
  • Ultra-small footprint (15 mm x 10 mm x 2.2 mm)
  • BLE Peripheral/Central roles supported
  • 2 Mbps and LE Long Range: Support for 2 Mbps, 1 Mbps, & 125 kps coded
  • Bluetooth 5.1 - Direction finding – AoA and AoD
  • Hostless operation – Internal MCU reduces BOM
  • Powerful Core Cortex-M4F (512kB Flash, 128 k RAM)
  • Built on years of experience with Nordic (BL600 and BL652 Series)
  • Fully featured development kit everything needed to start BLE development
  • Application design choice: Leverage Ezurio's smartBASIC, simple AT command set, Zephyr RTOS or utilize Nordic SDK directly
  • Nordic nRF52833 – 7x7 QFN with 42 GPIOs utilized
  • Mechanically same form factor as BL654 Series
  • Professional lighting
  • Direction finding / AoA / AoD
  • Secure medical peripherals
  • Industrial IoT sensors


  • Next generation of direction finding: Includes radio capable of Bluetooth v5.1 Direction Finding with AoA and AoD
  • Software flexibility and speed to market: Simple AT Command set or easily write event-driven, automated applications, no toolchain required with smartBASIC. Alternatively utilize either Zephyr RTOS or the Nordic SDK directly – develop application SW your way
  • True industrial operating range: Designed and certified to the highest industrial temperature range of -40 ºC to +105 ºC for every component utilised.
  • Global approvals - make yourself at home: Carries several modular FCC, IC, CE, RCM, MIC and Bluetooth SIG approvals.
  • Personal support from design to manufacture: Ezurio's industry-renowned support is passionate about helping you speed your design to market.