Stratus Pro (Gen 2) Overview

nRF9161 + nPM1300

Board Layout

Technical specifications and features

Most of the specifications outlined below are based on Nordic's nRF9161 Product Specification.

MCU: Latest Gen Nordic nRF9161 SiP

  • ARM Cortex-M33 with 1MB Flash

  • 256kB RAM

  • ARM® TrustZone®

  • ARM® Cryptocell 310

  • Up to 4x SPI, I2C, and UART with Easy DMA

  • I2S w/ EasyDMA

  • 4x PWM with EasyDMA

  • 12bit SADC with EasyDMA

  • 2x RTC

  • PPI (Programmable peripheral interconnect) interface


  • Transceiver and baseband

  • 3GPP LTE release 14 LTE-M/NB-IoT support

  • DECT NR+ ready

  • GPS/GNSS receiver

  • RF Transceiver for global coverage supporting bands:

  • B1, B2, B3, B4, B5, B8, B12, B13, B17, B18, B19, B20, B25, B26, B28, B65 (new), B66, and B85 (new)

  • Supports 4FF Nano SIM

  • Pre-programmed MCUBoot bootloader

nPM1300 Power Management IC

  • 800 mA battery charger

  • Dual 200 mA buck DCDC regulator

  • Battery fuel gauge controlled via I2C

  • Battery charge status and protection

Energy harvester IC

  • BQ25185 battery charger with solar input from Texas Instruments

  • Charge Vin: 3V to 18V

  • Dynamic Power Management

  • Supports battery types Li-ion, Li-Poly, and LiFePO4 chemistries

  • Integrated full battery protection

Board Operating Power Supply

  • Operating range 1.8 to 5.5V

  • External LiPo battery connection (2 Pin JST type)

  • Maximum output current: 800mA

Stratus Output Voltages (Accessible via Headers)

  • 1.8V

  • 3.3V

  • 5V (VUSB)

  • VBAT


  • For USB-to-Serial, DFU, and application firmware programming and debugging plus LiPo battery charging

Debugger & Programmer

  • Supports J-Link and CMSIS-DAP-based programmers

  • Onboard 10-pin 0.05" (1.27mm) SWD/JTAG pin connector

User I/O

  • Feather compatible header

  • 28 user-programmable GPIOs

  • 2 x push buttons (1 x Reset, 1 x user-programmable)

  • 1 x user-programmable LED

Antenna connections

  • 1 x U.FL for LTE-M/NB-IoT

  • 1 x U.FL for passive GPS antenna

Onboard sensors

  • STMicroelectronics LIS2DH MEMS digital output motion sensor: ultra-low-power high-performance 3-axis Femto accelerometer

  • Battery fuel gauge

  • Temperature sensor (enabled by nPM1300)

External Storage

  • 16 KBit I2C EEPROM memory (24CW160T)

External Peripheral Interface

  • Stratus Pro board has a QWIIC connector to interface external shields, sensors, and much more.

Power switch

  • SPDT slide switch for turning ON/OFF the power to the Stratus Pro board

SIM Compatibility

  • 4FF Nano SIM card holder

  • eSIM footprint to solder your own

  • Software-based SIM support

Prepaid Data

  • 500 MB of cellular data

  • 250 SMS

  • 10-year data validity

  • Service available in 100+ countries (LTE + NB-IoT)

Physical Size

  • 66.04 mm x 25.40 mm

Download the Full Datasheet

What's included in the box

Congratulations on receiving your Conexio Stratus Pro kit. Your package includes:


  • 1 x Conexio Stratus Pro dev kit.

  • 1 x 1NCE IoT SIM card

  • 1 x Getting Started instructions card

Preloaded Firmware

Out-of-the-box, Stratus Pro kit comes with pre-loaded firmware that periodically blinks the LED.

Last updated