24 V Industrial I/O
Use panel-ready digital, relay, transistor, 0–10 V, 4–20 mA and sensor interfaces instead of external breadboard-level conditioning.
IN-HOUSE MFG.
CE / EMC COMPLIANT
SHIPS WORLDWIDE
ESP32 DIN RAIL CONTROLLERS
Industrial ESP32
DIN Rail Controllers
NORVI | ESP32 & ESP32-S3 Based
Industrial ESP32 and ESP32-S3 controllers built for control panels—not breadboards. Compare fixed I/O, Ethernet, RS-485, cellular and modular DIN-rail ESP32 platforms in one place. For a broader platform overview, see our ESP32 industrial IoT controller guide.
24V Industrial I/O
Wi-Fi + Bluetooth
RS-485 / Modbus
Ethernet options
4G LTE options
DIN-Rail TH35
NORVI X · Modular ESP32-S3
Ethernet + RS-485 · optional LTE · up to 200 I/O
CORE CAPABILITIES
Built for Industrial Panels.
Ready for IoT.
NORVI puts the ESP32 ecosystem into control-panel hardware: 24 V field interfaces, industrial communications, DIN-rail mounting and model-specific I/O without proprietary programming-license costs. For a broader PLC-focused overview, explore the NORVI ESP32 PLC platform page.
RS-485 & Ethernet
Connect drives, meters, SCADA and legacy field equipment using model-dependent RS-485 Modbus RTU and wired Ethernet options.
Wi-Fi & Cellular
Choose local Wi-Fi/Bluetooth control or cellular variants for remote pumping, energy, environmental and unmanned-site applications.
Fixed or Modular I/O
Select compact fixed-I/O controllers for repeat panels, or NORVI X when machine variants need scalable I/O up to 200 points.
Open Development
Build with the ESP32 software ecosystem using Arduino IDE and ESP-IDF workflows, with NORVI documentation and implementation resources.
DIN-Rail TH35
Mount the controller as part of the electrical panel architecture, with industrial terminals and enclosures designed around cabinet installation.
CONTROLLER SELECTOR
Choose Your
Controller Platform
Start with the network your panel requires, then match the field signals. Fixed-I/O models are fastest for repeatable panels; NORVI X is the better fit when I/O varies from machine to machine.
| Series | I/O profile | Communications | Price band* | Panel fit | Technical link |
|---|---|---|---|---|---|
| NORVI IIOTFixed I/O | 6–8 DI · relay / transistor · 0–10V / 4–20mA variants | Wi-Fi · Bluetooth · RS-485 | $65.78–$136.40 | General machine, pump, HVAC and building panels | Datasheet → |
| NORVI ENETFixed I/O + Ethernet | 8 DI · 4 relay / transistor / 0–10V / 4–20mA variants | Ethernet · Wi-Fi · Bluetooth | $119–$147 | SCADA, wired plant LANs and Modbus TCP integration | Datasheet → |
| NORVI GSMRemote / cellular | Digital + relay / transistor / 0–10V / 4–20mA · 20 variants | 2G / 4G LTE · Wi-Fi · Bluetooth · RS-485 · Ethernet on AE08 | $90.19–$228.05 | Remote pumping, metering, solar and unmanned sites | Datasheet → |
| NORVI XModular ESP32-S3 | CPU + DI / relay / transistor / analog / RTD expansion modules · up to 200 I/O | Ethernet · RS-485 · Wi-Fi · Bluetooth 5 · optional 2G/4G LTE | $79–$101 CPU Modules from $23 | OEM and machine-builder standardization across many panel variants | Datasheet → |
| Agent OneCompact gateway / node | Digital + analog / relay / thermocouple variants | Wi-Fi · LoRa · NB-IoT · LTE variants | From ~$67–$173 | Compact sensor nodes, protocol bridges and long-range telemetry | Datasheet → |
| NORVI ESP32 HMIPLC + operator display | 4 DI · 4 transistor · 4 × 0–10V or 4–20mA · 5-inch touch display | Ethernet · RS-485 · Wi-Fi · Bluetooth | $137.50 | When the panel needs local visualization and control in one device | Datasheet → |
*Indicative published USD pricing for selection only. Confirm current model pricing, availability, cellular
bands and final electrical limits before quoting a project.
PRODUCT FAMILIES
Build Around the
Right Architecture
Use the cards for quick qualification, then open the exact model datasheet before final wiring or BOM release.
Fixed I/O
NORVI IIOT
The simplest fixed-I/O DIN rail ESP32 route: digital inputs plus relay, transistor, 0–10V or 4–20mA options in a compact controller.
$65.78–$136.40View series →
Ethernet
NORVI ENET
Choose ENET when the control cabinet is already wired for Ethernet and the controller must integrate with SCADA, servers or Modbus TCP networks.
$119–$147View series →
Cellular
NORVI GSM
For cabinets with no dependable site network: combine local I/O and Modbus with cellular telemetry, alarms and remote data acquisition.
$90.19–$228.05View series
→
Modular
NORVI X
A CPU-plus-expansion architecture for machine builders who want one controller family across small panels, large panels and cellular variants.
CPU $79–$101View series →
Compact IoT
Agent One
A narrow 35 mm-class device for compact telemetry, sensor-node and protocol-bridge applications where cabinet space matters.
From ~$67View series →
HMI + PLC
NORVI ESP32 HMI
Combine controller I/O, Ethernet, RS-485 and a local touch interface when a separate operator panel would add cost and cabinet complexity.
$137.50View series →
APPLICATION GUIDANCE
Built for Panel Builders
& Systems Integrators
An ESP32 DIN rail mount is most useful when the electrical requirements are clear before the software discussion starts. Send NORVI the same information you would put into an LV-panel or automation RFQ.
What to include in a controller inquiry
A complete brief lets the engineering team narrow the series and part number without a long email chain.
- Supply voltage and available panel PSU
- Digital input count and sink/source wiring
- Relay or transistor output count
- 0–10V, 4–20mA, RTD or pulse inputs
- RS-485 / Modbus RTU devices
- Ethernet, Wi-Fi or cellular requirement
- Local display / HMI requirement
- Quantity, target BOM and delivery timing
For repeated machine panels, also state the maximum future I/O count. That is usually the deciding factor
between a fixed-I/O controller and NORVI X.
Example RFQ
Typical panel-builder brief
Enough detail for a useful first recommendation:
Application: Pump control + remote monitoring
Power: 24 VDC panel supply
Inputs: 8 digital, 2 × 4–20mA level/pressure
Outputs: 4 relay outputs for contactors/alarms
Fieldbus: RS-485 Modbus energy meter
Network: Ethernet preferred; 4G option required for remote sites
Mounting: DIN rail inside IP-rated enclosure
Quantity: 20 units initial / repeat project
Power: 24 VDC panel supply
Inputs: 8 digital, 2 × 4–20mA level/pressure
Outputs: 4 relay outputs for contactors/alarms
Fieldbus: RS-485 Modbus energy meter
Network: Ethernet preferred; 4G option required for remote sites
Mounting: DIN rail inside IP-rated enclosure
Quantity: 20 units initial / repeat project
TECHNICAL COMPARISON
Plan the
DIN-Rail Footprint
Use the exact model drawing for final clearances, terminal access and antenna routing. These family-level dimensions are useful for early DIN-rail space planning.
NORVI 204 enclosure
90.5 × 56.6 × 60.6 mm
IIOT · ENET · many GSM variants
L × H × W
NORVI X CPU
81 × 104 × 37.5 mm
X1 / X2 / X3 CPU module footprint
L × H × W
Agent One
59 × 86 × 35 mm
Compact NORVI 202 enclosure
L × H × W
ESP32 HMI
179.6 × 129.6 × 42.6 mm
5-inch HMI enclosure / cutout application
L × H × W
TECHNICAL VERIFICATION
Verify Before
BOM Release
This category page is for platform selection. Before wiring, quoting or releasing a production BOM, verify the exact controller model against its current datasheet, documentation and applicable compliance information.
01
Primary Source
NORVI Technical DOCUMENTATION
Open current product documentation, setup material and engineering references.
Open documentation → 02 Specifications Model-Specific DatasheetsConfirm electrical limits, I/O configuration and communications for the exact part in your design.
Find datasheets → 03 Implementation NORVI GitHub RepositoriesReview available firmware examples, libraries and model-specific implementation resources.
Open GitHub → 04 Project Review Application-Specific ConfirmationFor cellular bands, certification scope, OEM quantities or unusual field signals, confirm the configuration with NORVI.
Technical support → DOCUMENTATION
DOCUMENTATION by
Controller Family
The category page gets you to the right family. The final datasheet defines channel ratings, GPIO mapping, modem options and wiring.
NORVI IIOT
Fixed-I/O choices for relay, transistor and analog input panels.
NORVI ENET
W5500 Ethernet controllers with four primary I/O configurations.
NORVI X
ESP32-S3 CPU modules plus modular I/O and communication expansions.
NORVI GSM
Choose the exact cellular technology, I/O family and modem variant.
Agent One
Compact ESP32-WROVER gateway / node variants for LoRa, NB-IoT and LTE applications.
NORVI ESP32 HMI
Two analog-input variants with the same 5-inch operator interface.
FREQUENTLY ASKED QUESTIONS
Common
Questions
Technical answers for engineers selecting an ESP32 controller for a DIN-rail control panel.
What is an ESP32 DIN rail controller?
It is an ESP32 or ESP32-S3 based programmable controller packaged for industrial control cabinets, with DIN-rail mounting, screw or push-in terminals, 24V field I/O and industrial communication interfaces.
Which NORVI model is best for a simple DIN rail ESP32 panel?
NORVI IIOT is the simplest starting point when Wi-Fi, Bluetooth and RS-485 are enough. Choose the model by relay, transistor, 0–10V or 4–20mA requirements.
When should I choose NORVI ENET instead?
Choose ENET when wired Ethernet is a core requirement—for example SCADA integration, Modbus TCP, plant LAN connectivity or local data logging without relying on Wi-Fi.
Which ESP32 DIN rail mount works best for changing I/O counts?
NORVI X is designed for that case. The ESP32-S3 CPU stays consistent while digital, relay, transistor, analog and other expansion modules are added to match each machine or panel.
Can NORVI controllers integrate with an existing PLC or SCADA system?
Yes. Depending on the series, RS-485 Modbus RTU and Ethernet-based communication can be used to connect meters, drives, HMIs, SCADA systems and existing PLC architectures.
What should a panel builder send for a fast recommendation?
Send the 24V supply details, digital and analog I/O counts, output types, fieldbus devices, Ethernet/Wi-Fi/cellular requirement, enclosure constraints, quantity and expected delivery timing.
NEXT STEP
Build the Right
Control System
From a compact fixed-I/O controller to a modular 200-point platform, choose the NORVI architecture that fits the panel. For OEM and system-integration projects, send the I/O list before finalizing the BOM.