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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. Under development.

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ANNA-B402 product summaryfile icon
ANNA-B402 data sheetfile icon
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Product selection
Documentation & resources
Product variantsANNA-B402
Short Range Features 
Bluetooth Qualificationsv5.1 (Bluetooth Low Energy)
Chip InsidenRF52833
Bluetooth low energy output power EIRP[dBm]9
Maximum range [m]800
Throughput Wifi1.4
Maximum number of connections20
Bluetooth profiles and servicesBluetooth GATT
CPU Features 
Microprocessor on boardStandalone module open CPU
Interfaces 
UART2
USB1
GPIO33
ADC8
SPI4
TWI (I2C compatible)2
I2S1
PDM1
PWM4
Electrical data 
Maximum supply [V]3.6
Minimum supply [V]1.7
Environmental data,
quality & reliability		 
Maximum temperature [°C]105
Minimum temperature [°C]-40
Features 
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✓
General Features 
AntennasInternal antenna, Antenna pin
Dimensions 
Dimensions [mm]6.5 x 6.5 x 1.2
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