AION420 – Your 4–20 mA sensors go IoT.
The simple solution for digitizing existing 4–20 mA sensors. AION420 seamlessly connects traditional industrial sensors to LoRaWAN® or mioty®—without any system modifications. Perfect for retrofits in industry, energy, water management, and building automation.
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Compatible with any sensor
Whether it’s a passive 2-wire transmitter or an active 3-wire sensor—the AION420 is available in the right design for either LoRaWAN® or mioty®.
2-wire version
For passive sensors that receive power and signals via the same two wires. Ideal for pressure, level, and temperature transmitters.
3-wire version
For active sensors with separate power and signal lines. Compatible with flow, humidity, and process sensors from all manufacturers.
Freely Configurable Signal Mapping
Convert the raw 4–20 mA current directly into physical values—bar, meters, %, °C, l/min. The AION420 transmits the scaled measurement value directly to the network. No post-processing, no calculations on the backend.
- ✓Customizable scaling from 4–20 mA to any physical quantity
- ✓Linearization along sensor-specific characteristic curves
- ✓Freely configurable upper and lower limit values with hysteresis
- ✓Immediate alarm transmission upon limit value violation — including return signal
If a threshold is exceeded (e.g., > 14 bar), the AION420 immediately sends an alarm—regardless of the next transmission interval.
Loop through the signal, get double the benefit
The analog 4–20 mA signal remains available for PLCs, data loggers, and process control systems—while the measured value is transmitted via LPWAN in parallel. No rewiring, no modifications to the existing control system.
1 · Integration
The AION420 is integrated into the existing current loop—passively, without signal distortion.
2 · Galvanic Isolation
Precise measurement with ±0.5% accuracy—the PLC and control system remain unaffected.
3 · Wireless transmission to the cloud
Transmission via LoRaWAN® or mioty® — with ranges of several kilometers.
Everything on board
Smart signal processing
Scaling, linearization, and physical conversion directly within the device.
Flexible Alarms
Threshold values with hysteresis, immediate alerts, and “return to normal range” notifications.
Efficient transmission
Cyclic or event-based transmission with intelligent filtering.
Diagnostics & Maintenance
Cable break, loop, and sensor fault detection; power supply status monitoring.
Remote configuration
Convenient over-the-air parameterization, scaling, and interval settings via downlink.
Signal loop-through
PLCs and controllers continue to use the analog signal—with parallel transmission via radio.
Galvanic isolation
Low-interference, reliable acquisition of the 4–20 mA signal.
Compact industrial housing
Robust design for control cabinets and industrial environments.
Suitable for brownfield applications
Compatible with sensors from virtually all manufacturers—ideal for existing systems.
Wherever there’s 4–20 mA, there’s AION420.
Universally applicable in industry, water management, energy, and building automation.
At a Glance
Retrofit without system intervention
Digitize existing 4–20 mA sensors without replacing them or modifying the control system.
Signal Can Be Used in Parallel
The analog signal remains available for PLCs and process control systems—measurement values are also transmitted via radio.
Long wireless range
LoRaWAN® and mioty® transmit sensor data over several kilometers—even in hard-to-reach facilities.
Cost-effective digitization
No additional cabling, no complex network infrastructure, minimal installation costs.
Specifications
Why AION420?
Turn any 4–20 mA sensor into an IoT sensor.
Talk to us about your retrofit project. We’ll advise you on the right model, configuration, and LPWAN connection.