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ANNA-B402 (open CPU)

Stand-alone Bluetooth 5.1 Low Energy module

Ultra-compact module for harsh professional environments

  • Ultra compact SiP (6.5 x 6.5 x 1.2 mm) with integrated antenna
  • Bluetooth 5.1, Bluetooth mesh, long range, Zigbee and Thread
  • Direction finding support for indoor location
  • Powerful open CPU architecture for customized applications
  • Extended temperature range up to 105 °C
  • Global certification
short_range
standard

Standard

professional

Professional

automotive

Automotive

Product variants

ANNA-B402

Bluetooth Low Energy module with open CPU, internal antenna, and antenna pin for external antenna connection.

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Documentation & resources
Product variantsANNA-B402
Bluetooth qualificationsv5.1 (Bluetooth Low Energy)
Chip insidenRF52833
Bluetooth low energy output power EIRP [dBm]9
Maximum range [m]800
Throughput Bluetooth1.4
Maximum number of connections20
Bluetooth profiles and servicesBluetooth GATT
Microprocessor on boardsStandalone module open CPU
UART2
USB1
GPIO33
ADC8
SPI4
TWI (I2C compatible)2
PDM1
PWM4
Maximum supply [V]3.6
Minimum supply [V]1.7
Maximum temperature [°C]105
Minimum temperature [°C]-40
Angle-of-Arrival (AoA)✓
Angle-of-Departure (AoD)✓
Bluetooth high speed (LE 2M PHY)✓
Bluetooth long range (coded PHY)✓
Bluetooth mesh✓
Factory programmed MAC address(es)✓
FOTA✓
Secure boot ready✓
Simultaneous GATT server and client✓
Supports customer applications✓
AntennasInternal antenna, Antenna pin
Dimensions [mm]6.5 x 6.5 x 1.2
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