NORVI Industrial · Expansion Series
Expand Your I/O.
Scale On Demand.
I²C · UART · Daisy-chain ×8 · DIN-Rail Ready
NORVI Expansion Modules add relay, analog, digital, transistor, LoRa, and NB-IoT capabilities to any NORVI ESP32 controller — plug-and-play, without redesigning your control cabinet.
12+
Module Variants
×8
Daisy-Chainable
16ch
Max I/O per Unit
24V
Industrial Rated
Core Capabilities
Engineered for the Plant Floor
Every module is built to industrial grade — opto-isolated, noise-immune, and compatible with the Arduino IDE and ESP-IDF out of the box.
F-01
High-Resolution Analog I/O
0–10 V and 4–20 mA industrial signal standards with 16-bit ADC
resolution. Differential and isolated input variants for noise-sensitive environments.
F-02
Relay & Transistor Outputs
Switch high-voltage AC/DC loads with relay outputs, or drive
fast-switching PLC-compatible transistor outputs — up to 16 channels per module.
F-03
LoRaWAN & NB-IoT
Long-range 915 MHz LoRa for wide-area networks; NB-IoT for
cellular-grade cloud connectivity without complex SIM management.
F-04
Daisy-Chain Scalability
Connect up to 8 modules on a single controller via I²C or UART.
Start
with one today — scale to full I/O capacity without cabinet redesign.
F-05
Opto-Isolation & EMI Immunity
Optical isolation on all channels protects the controller from
ground
loops, voltage spikes, and electromagnetic interference from motor drives.
F-06
Arduino IDE & ESP-IDF Ready
Standard I²C addresses and UART frames. Test programs and user
guides
available in the NORVI docs portal — drop in the library and ship.
Product Catalogue
Select Your Expansion Module
Every module ships with datasheets, test programs, and user guides. Worldwide shipping available.
Analog In
NORVI-EX-ANV01
0–10V Analog Input Expansion
4-channel voltage input for sensors, transducers, and HMI signal
loops. High-resolution ADC with I²C interface.
0–10V
4ch
I²C
Analog In
NORVI-EX-ANI01
4–20mA Current Loop Expansion
Industry-standard current loop input, immune to long cable runs
and
EMI. Ideal for pressure, flow, and temperature transmitters.
4–20mA
4ch
I²C
Analog In
NORVI-EX-ANV16
Differential Analog Input
True differential inputs with isolation for thermocouples,
bridge
sensors, and high-accuracy data acquisition systems.
Differential
Isolated
16-bit
Digital In
NORVI-EX-I4
4× Digital Input Expansion
Compact 4-channel optically isolated digital input for
push-buttons,
proximity switches, and discrete sensors.
4ch DI
Opto-isolated
Digital In
NORVI-EX-I8
8× Digital Input Expansion
8-channel isolated digital input for real-time status monitoring
and
discrete sensing on production equipment.
8ch DI
Opto-isolated
Digital In
NORVI-EX-I16
16× Digital Input Expansion
High-density 16-channel isolated input for large-scale machine
monitoring, fault detection, and complex automation systems.
16ch DI
Opto-isolated
Trans. Out
NORVI-EX-Q4
4× Transistor Output Expansion
4-channel fast-switching NPN transistor output for solenoids,
indicator lights, and PLC-compatible digital control.
4ch DO
NPN
Trans. Out
NORVI-EX-Q8
8× Transistor Output Expansion
8-channel transistor output for PLC-compatible digital control
loops, drives, and machine actuators.
8ch DO
NPN
Relay Out
NORVI-EX-R8
8× Relay Output Expansion
8-channel relay module for switching AC/DC loads — HVAC systems,
motors, lighting, valves, and contactor coils.
8ch Relay
AC/DC
Relay Out
NORVI-EX-R16
16× Relay Output Expansion
Maximum-density relay output for building management, energy
distribution, and high-channel process control applications.
16ch Relay
AC/DC
Comms
NORVI-EX-LRWAN-915
LoRaWAN Expansion Module
915 MHz LoRa connectivity for long-range, low-power wide-area
sensor
data transmission to cloud gateways and LoRaWAN networks.
LoRa 915MHz
UART
Low-power
Comms
NORVI-EX-NBIOT
NB-IoT Expansion Module
Cellular NB-IoT for remote industrial sites requiring reliable
cloud
connectivity without local Wi-Fi or Ethernet infrastructure.
NB-IoT
Cellular
UART
Industry Applications
Built for Real Industrial Deployments
From process control to remote IoT monitoring — NORVI Expansion Modules fit seamlessly into demanding automation environments.
01
Industrial Automation
Expand I/O to connect sensors, actuators, and machines for
automated
process control without adding PLCs.
02
Data Acquisition
Capture high-resolution analog data from temperature, pressure,
and
flow sensors across distributed plant equipment.
03
Remote Monitoring
Pair with LoRa or NB-IoT to stream field data wirelessly to
SCADA or
cloud platforms for predictive maintenance.
04
Building & Energy Mgmt
Control HVAC, lighting zones, and energy loads with relay
outputs
while tracking power metrics via analog inputs.
05
Machine Monitoring
Real-time fault detection and status monitoring via digital
input
modules — reduce downtime with instant alerting logic.
06
Process Control Loops
Drive VFDs, proportional valves, and actuators via analog output
expansions for closed-loop PID control.
07
Test & Measurement
High-resolution I/O modules suit lab setups, burn-in rigs, and
industrial test benches requiring precise signal handling.
08
Custom OEM Solutions
Mix and match modules to build tailored controller platforms for
your OEM product without custom PCB design overhead.
Why NORVI
The Modular Advantage
Purpose-built for systems integrators, machine builders, and OEMs who need flexibility without compromising on industrial reliability.
01
Seamless Hardware Integration
Direct plug-in to the dedicated expansion port — no
additional wiring, no external power supplies, no guesswork.
02
Start Small, Scale Fast
Deploy one module on day one. Chain up to 8 as
demand
grows. No cabinet redesign, no downtime.
03
Industrial-Grade Reliability
Opto-isolated channels, robust screw-terminal
connectors, and wide supply voltage tolerance for demanding environments.
04
Zero Learning Curve
Arduino IDE and ESP-IDF compatible. Complete
datasheets,
test programs, and user guides available — ship faster.
Communication Interfaces
I²C Bus
Up to 8 modules
UART / RS-485
Long-distance comms
LoRaWAN 915 MHz
km-range wireless
NB-IoT Cellular
Global coverage
Expansion Port
Plug-and-play
Daisy-Chain Topology
NORVI CTRL
EX-01
EX-02
EX-03
… ×8
Start Building TodayExpand Your
Expand Your
Control System
From a single relay output to a full 16-channel I/O system — NORVI Expansion Modules grow with your application.
FAQs
Common Questions
What are NORVI Expansion Modules?
NORVI Expansion Modules are plug-in add-ons that extend the input,
output, and communication capabilities of NORVI industrial ESP32 controllers. They cover
relay
outputs, transistor outputs, analog I/O, digital inputs, LoRaWAN, and NB-IoT connectivity.
How many modules can I chain to one controller?
You can daisy-chain up to 8 expansion modules on a single NORVI
controller via the I²C or UART expansion bus. Each module has a configurable address to
avoid
conflicts, allowing you to mix different module types in the same chain.
Do expansion modules need separate power or wiring?
No. Each module connects directly to the dedicated expansion port
on
the NORVI controller. Power and communication are handled through the port — no additional
power
supplies or communication wiring required.
Are these compatible with the Arduino IDE?
Yes. All modules are fully compatible with both the Arduino IDE and
ESP-IDF. NORVI provides test programs, datasheets, and user guides for every module so your
team
can integrate quickly.
Are the modules suitable for harsh industrial environments?
Yes. NORVI Expansion Modules feature opto-isolated inputs and
outputs,
robust screw-terminal connectors, and protection against electromagnetic interference —
suitable
for motor drives, heavy machinery, and panel boards.