The 4-20 mA current loop is a long-standing industrial signaling standard where a transmitter represents a measurement as a current between 4 mA (low end of range) and 20 mA (full scale). Because the signal is current-based, it resists noise and voltage drop over long cable runs, making it common across process and utility instrumentation.
A LoRaWAN 4-20 mA device reads one or more analog inputs, scales the current against a configured range, and sends the value in an uplink payload. This brings legacy or remote 4-20 mA transmitters onto a wireless network without trenching cable to a control room.
Typical deployments include water and wastewater (level, pressure, flow), tank and silo monitoring, HVAC, agriculture, and remote industrial assets. When comparing devices, look at:
- Number of channels and supported current/voltage input ranges
- Measurement accuracy, resolution, and loop power capability
- Battery life under your reporting interval and loop excitation
- Enclosure rating (IP/NEMA) and supported frequency plans
- Configurable reporting, thresholds, and payload codec
No devices match
Try broadening your search.
✓ CERT600-035 - Analog sensor with 4/20mA interface
This LoRa / LoRaWAN 4/20mA analogue radio transmitter is specifically designed for industrial applications …
✓ CERTAnalog - Sensor Interface
The Adeunis Analog has 2 inputs for connecting 0-10 V or 4-20 mA sensors and provides LoRaWAN® connectivity to …
✓ CERTDL-DLR2-004 - Analog 4 … 20 mA Sensor Transmitter
The Decentlab DL-DLR2-004 is an Analog or Digital Sensor Device for LoRaWAN® that consists of an Analog 4 … 20 …
HarvyLR 36 - Current Sensor
Self-powered LoRaWAN IoT sensor for AC and DC currents
HarvyLR 360 - Current Sensor
Self-powered LoRaWAN IoT sensor for AC and DC currents
izi-io 4840 - I/O Controller
The izinto izi-io 4840 is a multi-I/O controller with edge computing and LoRaWAN® connection that provides …
izi-io 4840 /grid - I/O Controller
Specially designed for monitoring local power grid transformation substations ("Ortsnetzstationen" in Germany, …
izi-io 4840 /heat - I/O Controller
Specially designed for monitoring building heating systems, the izinto izi-io 4840 /heat is an …
✓ CERTMetering Node
M-BUS Master Gateway and LORAWAN Converter
✓ CERTPress'O - Analog Interface
The nke WATTECO Press'O sensor turns any 0-10V, 4-20mA analog gauge into a Class A sensor connected to a …
✓ CERTPress'O - Analog Interface
The WATTECO Press'O sensor turns any 0-10V, 4-20mA analog gauge into a Class A sensor connected to a public or …
✓ CERTR718IJK - Wireless Multi-Sensor Interface for 0-24V ADC, Dry Contact and 4-20mA Sensors
This device is used for detecting 4mA-20mA signal, 0-24V DC ADC samples and dry contact features which employs …
✓ CERTRBS306-420MA - 4-20mA Current Loop Sensor
The 4-20mA Current Loop Sensor can measure the current from another device or sensor. It uses a 10-bit ADC to …
✓ CERTS2100 LoRaWAN® Data Logger
SenseCAP S2100 LoRaWAN® Data Logger is an easy-to-deploy, industrial-grade LoRaWAN® sensor hub that can …
✓ CERTtyness
IoT Sensor LoRa® modular and scalable combining several measurement acquisition and control functionalities.
✓ CERTtynode
The TyNode sensor providing a choice of different measurement. 3 versions available : temperature, pulse …
VoBo-GP-1 - Input Endpoint
General purpose LoRaWAN bridge
VoBo-HL-1 - Input Endpoint
General purpose LoRaWAN bridge certified for use in Class 1 Div 2 hazardous locations
VoBo-XP - Input Endpoint
The VoBo XP is an externally powered, industrial grade, 7 input, 4 output, LoRaWAN® bridge certified for Class …
✓ CERTYO Analog
YO Analog makes it possible to monitor devices and processes in automation. The device has six configurable …
Top vendors
Manufacturers with the most 4–20 ma devices in the catalog.
Related
Frequently asked questions
What is a LoRaWAN 4-20 mA sensor used for?
It interfaces with industrial transmitters that output a 4-20 mA current-loop signal, such as pressure, level, flow, or temperature transmitters, and converts that analog reading into a LoRaWAN uplink. This lets existing 4-20 mA instrumentation report wirelessly without wired SCADA cabling.
How is the 4-20 mA value sent over LoRaWAN?
The device samples the loop current, scales it against its configured range, and transmits the value in an uplink payload on a schedule or threshold. A payload codec on the network server decodes the bytes back into the engineering units you configured.
Can these devices power the 4-20 mA loop?
Some battery-powered units provide loop excitation to drive a passive transmitter, while others expect an externally powered loop. Check whether the device sources the loop, its compliance voltage, and how loop power affects battery life.