ESP32-WROOM32 Core
Dual-core ESP32 platform with 4 MB flash on current model datasheets, giving developers access to the established ESP32 ecosystem.
Cellular industrial controller
NORVI GSM Series | ESP32-WROOM32
ESP32 Cellular IoT Controller
The NORVI ESP32 cellular IoT controller is designed for remote industrial monitoring, control, telemetry and data acquisition over 2G GSM or 4G LTE.
Choose relay, transistor, 0-10V or 4-20mA I/O to match your field signals. The platform also includes RS-485, DIN-rail mounting and model-dependent microSD, RTC and Ethernet.
Range from $90.19 - $228.05 USD
20 model combinations
Four hardware families, two cellular technologies and multiple industrial I/O types.
20Controller variants
4Hardware families
2G / 4GCellular options
ESP32Open development platform
Connectivity
2G GSM / GPRS
4G LTE
Wi-Fi 2.4 GHz
Bluetooth
RS-485
Ethernet on AE08
MQTT / HTTP / Modbus
Core capabilities
Cellular IoT Controller Capabilities
The NORVI GSM family combines local processing, industrial I/O and familiar ESP32 development tools for remote automation.
2G GSM or 4G LTE
Choose SIM800-class GSM models or LTE models documented with Quectel EC25 and SIM7500 modem variants.
Industrial I/O
Sink/source digital inputs plus relay, transistor, 0-10V or 4-20mA I/O depending on the selected model.
RS-485 Built In
Integrate Modbus RTU devices such as energy meters, sensors, drives and existing industrial equipment.
Local Data Logging
AE04 and AE08 variants add microSD and RTC features for local logging, timestamps and store-and-forward applications.
Ethernet on AE08
AE08 variants add W5500 Ethernet, useful for cellular-to-Ethernet gateways and sites that need multiple network paths.
OLED + Local Controls
A built-in 0.96-inch OLED and front-panel buttons support diagnostics, commissioning and local status display.
Open Programming
Program with Arduino IDE, ESP-IDF and compatible ESP32 libraries without proprietary PLC programming license fees.
DIN-Rail Installation
Industrial enclosure, screw terminals and DIN-rail mounting make the family suitable for control panels and field cabinets.
Controller families
Choose the Hardware Level First
Start with the family that matches your I/O density and local logging needs. Then choose the network and signal type.
AE02
Compact analog monitoring with digital inputs, two transistor outputs and RS-485.
- Analog options0-10V / 4-20mA
- Digital inputs7
- microSD / RTCNo
- EthernetNo
AE04
Higher analog channel count with local storage and RTC for monitoring and data logging.
- Analog options6 channels
- Digital inputs6
- microSD / RTCYes
- EthernetNo
AE07
Relay or transistor-focused control for pumps, alarms, contactors and remote switching.
- Output optionsRelay / Transistor
- Digital inputs7
- microSD / RTCNo
- EthernetNo
AE08
Most complete communication stack with storage, RTC and Ethernet plus multiple I/O choices.
- I/O optionsRelay / Trans. / Analog
- Digital inputs4 or 6
- microSD / RTCYes
- EthernetYes
Compare the wider cellular range
Not sure NORVI GSM is the right cellular platform?
Compare ESP32 Cellular Controllers
Compare NORVI GSM with NORVI X, EC-M12 and Agent One by form factor, power source, cellular technology and application fit.
Product models
Compare Cellular IoT Controller Models
Compare the NORVI GSM range by network, I/O type and hardware family. Key I/O, price, model image and datasheet stay visible on every card.
Selection guide
Which NORVI GSM Family Fits?
A quick comparison before you enter model-specific wiring and modem details.
| Feature | AE02 | AE04 | AE07 | AE08 |
|---|---|---|---|---|
| Best fit | Compact analog monitoring | Higher-channel analog + logging | Remote discrete control | Full cellular gateway |
| 2G / 4G variants | Yes | Yes | Yes | Yes |
| 0-10V / 4-20mA | Yes | Yes | Not primary I/O | Yes |
| Relay / transistor | 2 transistor outputs | 2 transistor outputs | Relay or transistor | Relay or transistor variants |
| microSD + RTC | No | Yes | No | Yes |
| Ethernet | No | No | No | W5500 |
| RS-485 | Yes | Yes | Yes | Yes |
Technical specifications
Cellular IoT Controller Specifications
Use these platform specifications for initial selection. Exact I/O ratings, GPIO mapping and modem configuration remain model-specific.
Processor
SoCESP32-WROOM32
Flash4 MB
SRAM520 KB
Display0.96 in OLED
Connectivity
Cellular2G GSM / 4G LTE
WirelessWi-Fi + Bluetooth
Field busRS-485
EthernetW5500 on AE08
Power & Environment
Rated24 V DC
ProtectionIP20
Temp.-10 to +85 °C*
MountingDIN rail / tabs
Development
ArduinoSupported
ESP-IDFSupported
CloudMQTT / HTTP
IndustrialModbus RTU
* Confirm environmental, supply, electrical and cellular-band limits in the exact model datasheet used for the deployment.
System architecture
Field Device to Cloud, Without a Separate Gateway
The controller can acquire signals locally, execute automation logic and transfer selected data through cellular or local networks.
Field SensorsLevel, pressure, flow, temperature, switches and
meters
→
Industrial I/ODigital, 0-10V, 4-20mA, relay, transistor and
RS-485
→
NORVI GSMESP32 logic, logging, local display
and protocol handling
→
Remote PlatformCellular / Ethernet / Wi-Fi to MQTT, HTTP,
SCADA or custom cloud
Applications
Cellular IoT Controller Applications
Designed for distributed or unattended installations where fixed internet is unavailable, unreliable or impractical.
Pump Stations
Monitor level, pressure, flow and pump state, then send alarms or execute control actions without a fixed network connection.
Remote Metering
Collect pulse, analog or RS-485 meter data and transmit selected readings to a central platform.
Solar & Generator Sites
Track alarms, operating state and sensor values across dispersed power infrastructure using cellular backhaul.
Irrigation Control
Operate pumps and valves, monitor field sensors and schedule automation across remote agricultural sites.
Equipment Monitoring
Connect existing machinery, meters and sensors to a remote monitoring system through Modbus and cellular links.
Unattended Data Logging
Record environmental values locally on supported models and synchronize data when the communications path is available.
Technical verification
Engineering Information You Can Verify
Use this page for product selection. Check wiring, I/O ratings, cellular bands, GPIO assignments and compliance details in the exact model documentation.
Primary source
Model Documentation
Open the datasheet, user guide and test program for the exact controller.
→
Documentation
NORVI Technical Library
Browse current setup, wiring and integration resources across the NORVI product range.→
Implementation
NORVI GitHub
Review available code examples and ESP32 implementation resources.→
Application review
Technical Support
Confirm cellular coverage, I/O ratings or model selection before final deployment.→
NORVI GSM documentation
Find Documentation Fast
Select the network, open a controller family, then access the exact datasheet, user guide or test program. The section stays compact until a family is opened.
Need application-specific help?
Choose the Right Cellular Controller Before You Build
Share your sensor types, required outputs, cellular network and communication protocol. NORVI can help select the right cellular IoT controller for the application.
FAQs
Common Questions
Can't find what you're looking for? Our team is available for a free technical consultation.
What is a NORVI cellular IoT controller?
NORVI GSM combines ESP32 processing, industrial I/O and cellular communication.
It can monitor field devices, run automation logic and exchange data over 2G GSM or 4G LTE.
Should I choose 2G GSM or 4G LTE?
Choose based on local carrier support, deployment lifetime and regional
cellular bands. LTE is generally the stronger option for new long-term installations. Confirm the modem
and supported bands in the exact model documentation.
Which model is best for 4-20mA or 0-10V sensors?
AE02 is the compact analog option. AE04 adds more analog channels, microSD and
RTC. AE08 also adds Ethernet. Choose the I suffix for 4-20mA and the V suffix for 0-10V.
Which model is best for relay or transistor control?
AE07 is the focused discrete-control family. AE07-R provides relay outputs,
while AE07-T provides transistor outputs. Choose AE08 when Ethernet, microSD and RTC are also required.
Can NORVI GSM be programmed as a remote PLC?
Yes. The ESP32 can run custom control logic using Arduino IDE, ESP-IDF and
compatible libraries. Applications can combine local I/O with SMS, MQTT, HTTP or Modbus communication.
Does every model include Ethernet and microSD?
No. AE08 models include Ethernet, microSD and RTC in the current product
documentation. AE04 includes microSD and RTC but not Ethernet. AE02 and AE07 are more compact
configurations without those features.
Can I connect Modbus RTU devices?
Yes. RS-485 is available across the NORVI GSM family, allowing the ESP32 to
communicate with Modbus RTU devices such as meters, drives and industrial sensors.
Can the controller log data without an active cellular connection?
Models equipped with microSD and RTC can be programmed for local logging and
store-and-forward workflows. The final behavior depends on the application firmware.
Where can I find wiring, GPIO maps and test code?
Use the documentation section above. Each model has direct links to its
datasheet, user guide and test program so wiring and GPIO information remain tied to the exact hardware.
Are the 2G and 4G versions otherwise identical?
They share the same family-level I/O concept, but the cellular modem and
related communication details differ. Always use the documentation for the exact G or L part number.
Certification & engineering scope
Model Documentation Defines the Final Limits
Current NORVI GSM datasheets list industrial safety and EMC references alongside model-specific electrical and environmental data.
Verify the exact part number
Cellular modems, I/O counts, GPIO allocations and peripheral features vary by model. Use the selected model datasheet as the primary technical source.
Programmable controllerEN 61131-2:2007 listed in current
NORVI GSM datasheets.
Electrical safetyEN 61010-1:2010+A1:2019 and EN IEC
61010-2-201:2018 are listed.
EMC2014/30/EU Electromagnetic Compatibility is listed in
current model documentation.
InstallationDIN rail / mounting tabs, screw terminals
and IP20 are listed on documented variants such as AE08-R-L.