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The bridge — Bluetooth Mesh, Modbus and 2 km DECT NR+, on one gateway.

The BFi53ER0S EdgeBox unifies Bluetooth Mesh / NLC lighting, Modbus RTU field devices and 0–10 V I/O to a Modbus TCP network, BMS or cloud over PoE. The ER0S variant adds a 5G DECT NR+ radio — the BFi91NR1 stack — to receive long-range sensor backhaul from BFi91XTD nodes over 2 km, with no SIM and no cellular subscription.

Bluetooth 5.3 LE 5G DECT NR+ > 2 km 10/100M PoE Modbus TCP / RTU

IoT Edge Gateway · Powered

BFi53ER0 / ER0S

Bluetooth 5 + 5G DECT NR+ + Modbus · PoE · metal heat-sink

A powered edge gateway that bridges field-side Bluetooth Mesh lighting, Modbus RTU devices and 0–10 V I/O to a Modbus TCP network, BMS or cloud over PoE Ethernet. The ER0S adds an integrated 5G DECT NR+ radio with the built-in BFi91NR1 stack (ETSI TS 103 636) to receive long-range backhaul from BFi91XTD sensor nodes.

Wireless (ER0S)Bluetooth 5.3 LE (+13 dBm, >100 m) + 5G DECT NR+ (+21 dBm, >2000 m)

DECT NR+ stackBFi91NR1 · software IP · ETSI TS 103 636

Network10/100M Ethernet (PoE PD) · Modbus TCP server / RTU master

Field bus1× RS-485 (Modbus RTU)

Analog I/O2× 0–10 V input · 2× 0–10 V output

DC output · Storage24 V / 0.65 A · microSD data logging

PowerPoE PD or DC 14–32 V · remote OTA (Ethernet / BLE)

Temp · Size−20~+75 °C (core −40~+105 °C) · 115 × 110 × 38 mm

CertificationsNCC · CE · FCC · TELEC · RCM · Bluetooth

Smart buildings / BMSIndustrial edgeNLC lightingDECT NR+ backhaulCritical systems

One Gateway

Everything it bridges

Field-side wireless and wired devices on one side; your BMS, cloud and IP systems on the other.

Wireless · Bluetooth Mesh

NLC lighting

BFi53 dimmers and battery-free switches over Bluetooth Mesh / NLC — full mesh model support.

Wireless · DECT NR+ (ER0S)

Sensor backhaul

Long-range fixed-termination link from BFi91XTD sensor nodes — over 2 km, no SIM.

Wired · RS-485

Modbus RTU field devices

Acts as a Modbus RTU master to meters, drives and controllers on the RS-485 bus.

Wired · 0–10 V

Analog I/O

2× 0–10 V inputs and 2× 0–10 V outputs for dimming ballasts, sensors and actuators.

Energy harvesting

EnOcean proxy

Proxies self-powered EnOcean switches and sensors straight into the mesh / network.

Uplink · PoE

Modbus TCP → BMS / cloud

Presents everything as a Modbus TCP server to SCADA, BMS or cloud over one PoE cable.

Variants

ER0 vs ER0S

Standard

BFi53ER0

Bluetooth 5.3 LE · LoS > 100 m
Bluetooth Mesh + Modbus edge
10/100M PoE · RS-485 · 0–10 V I/O
Best for in-building NLC + Modbus

5G DECT NR+

BFi53ER0S

+ integrated 5G DECT NR+ · > 2 km LoS
+ built-in BFi91NR1 stack
Long-range backhaul from BFi91XTD
Best for large-site / campus sensing

Stacks on board

Multiple radio stacks, one gateway

The EdgeBox carries several protocol stacks on board — including FLSEMI's US-developed DECT NR+ MAC — and a Thread-over-Ethernet stack that connects Thread / Matter devices to Apple HomeKit and other smart-home ecosystems.

Bluetooth Mesh StackDECT NR+ MAC StackThread over Ethernet → Apple HomeKit