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Precision Analog IoT Converter

VIoT 4-20mA Node

Interface Analog Sensors with LoRaWAN Networks

Converts standard industrial 4-20mA current loop signals into wireless LoRaWAN packets for long-range monitoring, enabling legacy analog transmitters to integrate seamlessly into modern IoT infrastructure.

VIoT 4-20mA Node

4-20mA Current Loop

Direct current-loop ADC acquisition with 100-sample digital filtering for noise-free measurement.

Ultra-Low Power (~2μA)

Micro-amp sleep current ensuring 5 to 10 years of unmaintained field operation on internal batteries.

Industrial Protection

Overvoltage protection up to 25V DC continuous and ±15kV ESD air discharge rating for heavy machinery.

Sub-GHz 865 MHz

22 dBm high power LoRaWAN transmitter with single-gateway line-of-sight (LOS) range of 10+ km, extending to virtually unlimited range via gateway mesh technology.

Core Architectural Advantages

Why Deploy Vandyam LoRaWAN Products

Understand how our node generic architecture delivers non-cellular network freedom, mass scalability, and tailored hardware solutions.

Zero Telco Dependency

Non-Cellular Network Ownership

Operate entirely on license-free Sub-GHz radio spectrum (865 MHz IN865). Eliminates monthly cellular SIM fees, telco carrier dead zones, and dependence on public tower infrastructure.

LoRaWAN Standard Advantage
High Density Capacity

Mass Deployment Scalability

A single 8-channel Vandyam LoRaWAN outdoor gateway handles up to 10,000+ active sensor nodes across a tested 10+ km LOS radius, with virtually unlimited range achievable through gateway mesh technology. Effortlessly scale across massive industrial, agricultural, or utility sites.

LoRaWAN Standard Advantage
Micro-Amp Sleep

Ultra-Low Power Operations

Sub-GHz radio modulation coupled with micro-amp deep sleep states (~2μA sleep current). Sensor nodes deliver 5 to 10+ years of uninterrupted battery life without field maintenance.

LoRaWAN Standard Advantage
100% Data Sovereignty

On-Premise Gateway & Network Server

Run ChirpStack network servers directly on-premise or on the edge gateway. 100% local data privacy, air-gapped security compliance, zero cloud vendor lock-in, and instant local MQTT decodes.

LoRaWAN Standard Advantage
Engineering Flexibility

Highly Customizable Hardware & Firmware Solutions

From an engineering perspective, every operational environment is unique. Vandyam's LoRaWAN product stack is designed from the ground up to be fully customizable to meet exact client telemetry, sensor, power, and enclosure requirements.

Custom ODM / OEM Program

Need custom sensor integration, specific frequency tuning, or custom enclosure branding? Our engineering team delivers tailored hardware buildouts.

Customization Option 01

Hardware & Front-End Interfaces

Support for 4-20mA analog loops, RS485 Modbus RTU, NavIC/GPS GNSS tracking, pulse counting, SDI-12, and custom sensor probes.

Fully Configurable
Customization Option 02

Enclosure & IP Protection Ratings

IP65, IP67, and IP68 waterproof housings with options for DIN rail, wall mount, pole mount, or rugged handheld forms.

Fully Configurable
Customization Option 03

Firmware & Edge Logic Tuning

Configurable sampling rates (30s to 24h), dynamic threshold alarms, motion/tilt triggers, custom payload encoders, and remote MQTT commands.

Fully Configurable
Customization Option 04

RF Bands & Power Configuration

Frequency tuning for IN865, EU868, US915; custom antenna gain (2.6 dBi to 10 dBi); 12V/24V DC input with surge protection or long-life battery modules.

Fully Configurable
Customization Option 05

OEM / ODM Custom Engineering

Turnkey white-label branding, custom PCB layout design, proprietary sensor integration, and enterprise software connector development.

Fully Configurable

Technical Specifications

Comprehensive hardware and software specifications for system integration and performance benchmarking.

1. General

Type
Analog Device
Installation
Plug and Play Device
Noise Immunity
Excellent

2. Analog Input Specifications

Input Channels
Single analog input
Input Type
4-20mA current loop
ADC Resolution
12-bit
ADC Reference Voltage
1.2V internal reference
Sampling Rate
150 kHz (with clock division of 20)
Sampling Method
100-sample averaging for noise reduction

3. Current Measurement

Measurement Range
0-25 mA (typical 4-20mA operation)
Resolution
~0.005 mA per LSB (after calibration)
Accuracy
±0.5% of reading (after calibration)

4. Data Acquisition

Oversampling
100 samples per reading
Digital Filtering
Averaging algorithm for noise reduction
Data Format
Integer hundredths of mA (e.g., 1250 = 12.50 mA)

5. Power Management (Platform Generic)

Sleep Current
~2μA deep sleep
Operating Current
30 mA peak transmit current
External Power
12V DC input (protection up to 35V DC)

6. Protections

Overvoltage
Continuous protection up to 25V DC (35V DC peak)
Short Circuit
Current limited on inputs and power lines
ESD Protection
TVS/ESD Protection, ±15kV air discharge, ±8kV contact discharge

7. Physical Specifications

Dimensions
82 x 90 x 68 mm
Mounting
DIN rail or wall mount
Operating Temperature
0°C to 50°C (Industrial -40°C to +70°C option)
Humidity
30% to 95% RH (non-condensing)

8. Radio Specifications

Frequency Band
865MHz IN865 (865.0625 / 865.4025 / 865.9850 MHz), BW 125kHz
Modulation
LoRa modulation (Class A default)
Transmit Power
22 dBm
Antenna
2.6 dBi, 2 metre wire (optional)
Range
Up to 10 km – 15 km at clear line of sight

Ready to Connect Analog Sensors to LoRaWAN?

Speak with our engineering team to request sample units or discuss custom interface options.