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Environmental & motion sensing at 3 km — no SIM, no cellular.

The BFi91XTD is a 5G DECT NR+ sensor node built on the Nordic nRF9151 SiP and nRF5340 SoC, with a full suite of integrated environmental, motion and inertial sensors. It reports over reliable sub-GHz–1.9 GHz DECT NR+ — designed for large-scale, high-density sensing with no SIM and no cellular subscription.

Nordic nRF9151 + nRF5340 BME688 environmental IMU + accelerometer USB-C · battery / solar ready

DECT NR+ Sensor Node · Nordic-based

BFi91XTD

nRF9151 SiP + nRF5340 SoC · multi-sensor · portable terminal

A 5G DECT NR+ environmental & motion sensor platform combining the Nordic nRF9151 SiP and nRF5340 SoC with integrated environmental, motion and inertial sensors. It deploys as a portable terminal (PT) that reports over the DECT NR+ link to a fixed-terminal gateway — the BFi53ER0S EdgeBox — or any compatible nRF9151-based receiver.

Wireless5G DECT NR+ · FTDMA · sub-GHz – 1.9 GHz

Rangeup to ~3 km LOS · interference-resistant (LMS hopping)

Scalabilitydesign target > 1M nodes / km²

ChannelsBCH / PCH paging + RACH / DCH data

ComputenRF9151 SiP + nRF5340 SoC (Cortex-M33)

SecurityArm TrustZone · CryptoCell-310 / 312

InterfacesSPI · UART · TWI · I²C · PWM · ADC · USB 12 Mbps

PowerUSB Type-C · battery fuel gauge · battery / solar ready

Size58.8 × 58.5 × 19.7 mm

Condition monitoringEnvironmental sensingInfrastructureLarge-site / campusPortable terminal

Integrated Sensors

A full sensor suite, on one node

Best-in-class Bosch, ADI and Nordic sensors, read by the on-board DECT NR+ driver and reported as compact JSON.

Environmental · Bosch BME688

Air & climate

Temperature, humidity, pressure, air quality (IAQ), CO₂ and VOC in one sensor.

Accelerometer · ADI ADXL367

Ultra-low-power motion

3-axis accelerometer that wakes the node and triggers motion-based reporting.

IMU · Bosch BMI270

6-axis inertial

Gyroscope + accelerometer for orientation, vibration and movement analysis.

Magnetometer · Bosch BMM350

3-axis magnetic

Heading and magnetic-field sensing for orientation and presence detection.

Power · Nordic nPM1300

Battery fuel gauge

Battery voltage, current, charge state and PMIC temperature — reported inline.

Reliability

Always-on integrity

System-level watchdog, boot-failure recovery and an intelligent power-down alert.

How it reports

From sensor reading to your IT system

On a device-ID address or broadcast query, the node reads its sensors and reports over DECT NR+ as compact JSON (endpoint 0x53E5, ≈312 B full set) — one-shot, periodic or motion-triggered. A fixed-terminal gateway converts it to an IP network for ICT / IT integration.

BFi91XTD node→ DECT NR+ · RACH / DCH→ JSON @ 0x53E5→ BFi53ER0S gateway→ CIP / EtherNet-IP · IPv4 / v6