The WRL-20854 (NINA-B306) is a Bluetooth 5 compliant low energy module featuring an integrated Arm Cortex-M4 processor. It supports various 2.4 GHz radio modes, including Bluetooth Low Energy, IEEE 802.15.4, and proprietary u-blox 2.4GHz modes. The module comes with an internal PCB antenna and provides a maximum range of 1400m. It is equipped with 1MB Flash and 250kB RAM.
Features

NINA-B306

Bluetooth 5 Compliant Low Energy module with integrated Arm Cortex-M4 processor
Supported 2.4 GHz radio modes

Bluetooth Low Energy
IEEE 802.15.4
Proprietary u-blox 2.4GHz modes

Internal PCB antenna

Max range: 1400m

1MB Flash
250kB RAM

BME280 Environmental Sensor

Temperature Range:

Full Accuracy: 0 to 65C
Operational: -40 to +85C

Humidity Range: 0 to 100% RH
Pressure Range: 300 to 1100hPa
I2C address:0x76

ISM330DHCX 6DoF IMU

3D Accelerometer

Selectable full-scale ranges: +-2/4/8/16g

3D Gyroscope

Extended selectable full-scale ranges: +-125/250/500/1000/2000/4000dps

Operating temperature range: -40 to +105C
Embedded compensation for high stability over operating temperature range
Embedded smart FIFO up to 9kB
Programmable Finite State Machine to process data from accelerometer and gyroscope

External sensor data processing not supported on this board

Smart embedded functions and interrupts: tilt detection, free-fall, wakeup, 6D/4D orientation, click and double-click
Embedded pedometer, step detector and counter
Embedded temperature sensor
I2C address:0x6B

Thing Plus Form-Factor (Feather-compatible):

Dimensions: 2.30in. x 0.9in.
Two mounting holes:

4-40 screw compatible

21 GPIO PTH breakouts

SPI, UART and I2C interfaces
Six analog
8 digital I/O

USB-C Connector
2-Pin JST LiPo Battery Connector for a LiPo battery (not included)
4-Pin JST Qwiic Connector
MC73831 Single-Cell LiPo Charger

500mAcharge rate

MAX17048 Single-Cell LiPo Fuel Gauge
SD Card Slot

LEDs:

PWR- Red Power LED
CHG- Yellow battery charging status LED
STAT- Blue status LED tied to IO41

Resources

Hookup Guide
Datasheets:

NINA-B306
BME280
ISM330DHCX
MAX17048

Arduino Libraries:

BME280
ISM330DHCX
MAX17048