ESP32 Cellular IoT Controller
Cellular IoT Controller | ESP32 4G LTE Industrial Controller - NORVI
The cellular IoT controller from NORVI is a professional-grade industrial controller designed for remote monitoring and automation using cellular networks. This ESP32-powered 4g lte controller combines cellular connectivity with WiFi and Ethernet, making it the ideal solution for industrial IoT applications where traditional network access is unavailable.
Built as a versatile remote plc, this cellular IoT controller features relay outputs, multiple I/O channels, and functions as an iot gateway. With integrated 4g gsm relay control and gsm sms controller capabilities, you can monitor and control industrial equipment from anywhere. The built-in data logger records sensor data, while the wireless plc functionality enables programmable automation for complex industrial processes.
Feature Highlights
- ESP32-WROOM32 Module
- GSM / LTE Connection
- Built-in 0.96 OLED Display
- Built-in Button on the front panel
- Digital Inputs
- Analog Inputs
- Relay Outputs
- Ethernet Connectivity
- DIN-Rail mount
Features Highlights
Cellular IoT Controller Key Features
Cellular Connectivity
4G LTE, 3G, and 2G cellular networks. This cellular IoT controller works anywhere with mobile coverage, no Wi-Fi required.
Industrial-Grade I/O
Relay outputs, digital inputs, and analog inputs. Built as a true industrial controller for harsh environments.
Remote PLC Control
Program as a wireless plc with SMS commands, MQTT, or HTTP. Control equipment remotely via cellular iot networks.
Multi-Protocol Gateway
Functions as an iot gateway supporting Modbus, MQTT, HTTP, and custom protocols for seamless integration.
Built-in Data Logger
Local storage for sensor data. The data logger captures readings even during network outages.
ESP32 Powered
Dual-core ESP32 processor with WiFi and Ethernet backup for the 4g lte controller primary cellular connection.
NORVI ESP32 GSM Models
Choose the Perfect model for Your Automation Project
| Model | Features | Doc | Buy (GSM) | Buy (4G LTE) |
|---|---|---|---|---|
Industrial Controller Specifications
Cellular IoT Controller Core
- Processor: ESP32-WROOM32 dual-core
- Cellular Module: Quectel EC21-G (global bands)
- Connectivity: 4G LTE/3G/2G + WiFi + Ethernet
Industrial Controller I/O
- Relay Outputs (10A @ 250VAC)
- Digital Inputs (5-24VDC)
- Analog Inputs (0-10V, 4-20mA)
Remote PLC Features
- Programming: Arduino IDE, ESP-IDF, MicroPython
- Protocols: MQTT, HTTP, Modbus TCP/RTU, SMS
- Data Logger: SD card slot, internal flash storage
Cellular IoT Connectivity
- 4G LTE Bands: B1/B3/B5/B7/B8/B20/B28
- GSM SMS Controller: Send/receive commands
- Network: TCP/IP, UDP, FTP, HTTP
Power & Protection
- Input: 9-32VDC wide range
- Protection: Surge, reverse polarity, ESD
- Mounting: DIN rail, industrial enclosure
Cellular IoT Controller Applications
Remote PLC Applications
- Remote pump stations and water treatment
- Oil and gas monitoring at remote wellheads
- Solar farm monitoring and control
- Generator auto-start systems
- Agricultural irrigation control
- Building automation in remote locations
Industrial Controller Applications
- Manufacturing process control
- HVAC system monitoring
- Environmental monitoring stations
- Equipment health monitoring
- Predictive maintenance systems
- Energy management and optimization
Cellular IoT Use Cases
- Asset tracking and fleet management
- Distributed sensor networks
- Smart city infrastructure
- Utility metering (water, gas, electric)
- Transportation systems
- Emergency notification systems
Data Logger Applications
- Temperature and humidity logging
- Power consumption monitoring
- Environmental compliance reporting
- Quality control data collection
- Research and development testing
- Long-term trend analysis
Remote PLC and Wireless PLC Capabilities
The cellular IoT controller functions as a powerful remote plc for industrial automation:
Wireless PLC Programming
- Arduino IDE for custom logic
- ESP-IDF for advanced applications
- MicroPython for rapid development
- Compatible with standard ESP32 libraries
Remote PLC Control Methods
- SMS Commands: Text-based control for the gsm sms controller
- MQTT: Publish/subscribe for real-time control
- HTTP/HTTPS: RESTful API access
- Modbus: Industrial protocol support
- Mobile Apps: Custom app development
Industrial Automation Features
- Timer and counter functions
- Conditional logic and triggers
- Multi-step sequences
- Alarm and notification system
- Schedule-based automation
Features Highlights
Cellular IoT Controller Key Features
Cellular Connectivity
4G LTE, 3G, and 2G cellular networks. This cellular IoT controller works anywhere with mobile coverage, no Wi-Fi required.
Industrial-Grade I/O
Relay outputs, digital inputs, and analog inputs. Built as a true industrial controller for harsh environments.
Remote PLC Control
Program as a wireless plc with SMS commands, MQTT, or HTTP. Control equipment remotely via cellular iot networks.
Multi-Protocol Gateway
Functions as an iot gateway supporting Modbus, MQTT, HTTP, and custom protocols for seamless integration.
Built-in Data Logger
Local storage for sensor data. The data logger captures readings even during network outages.
ESP32 Powered
Dual-core ESP32 processor with WiFi and Ethernet backup for the 4g lte controller primary cellular connection.
NORVI ESP32 GSM Models
Choose the Perfect model for Your Automation Project
| Model | Features | Doc | Buy (GSM) | Buy (4G LTE) |
|---|---|---|---|---|
NORVI ESP32 GSM - Technical Specifications
Industrial ESP32 Solution for IoT, MQTT, and Ethernet Applications
| Parameter | Specification / Detail |
|---|---|
Microcontroller (MCU) |
ESP32-WROOM32 |
Cellular Connectivity |
GSM: SIMCOM SIM800L (Quad-band GSM/GPRS) | LTE: Quectel EC25 (4G LTE, 3G UMTS/HSPA+, 2G GSM/GPRS/EDGE) |
Wireless Communication |
Wi-Fi 802.11 b/g/n, Bluetooth v4.2 |
Display |
0.96″ OLED |
Real-Time Clock (RTC) |
DS3231 with battery backup |
Ethernet |
W5500 Ethernet PHY (Available in specific models) |
Storage |
microSD card support (Available in specific models) |
Inputs |
Digital Inputs: 8 × 24V (Sink/Source configurable) | Analog Inputs: 4 × 0–10V or 4–20mA (Depending on model) |
Display |
0.96″ OLED built‑in |
Storage |
microSD card support |
RTC |
DS3231 on board (battery backed) |
Outputs |
Relay Outputs: 6 × 5A (Available in specific models) | Transistor Outputs: 4 × (Available in specific models) |
Serial Communication |
RS-485 interface via terminal block |
Programming Interface |
USB (Mini USB port for serial connection) |
Mounting |
DIN-Rail mountable plastic enclosure |
Power Supply |
24V DC |
Certifications |
EN 61131-2:2007 | EN 61010-1:2010+A1:2019 | EN IEC 61010-2-201:2018 | 2014/30/EU Electromagnetic Compatibility (EMC) |
Applications
Wireless IoT Gateways
Connect and manage IoT devices wirelessly with secure, reliable gateways.
Data Transmission over Cellular Network
Transmit industrial data over GSM/4G networks for remote monitoring and control.
WiFi to GSM Bridge
Bridge WiFi devices to GSM networks for seamless industrial connectivity.
MQTT Gateway
Enable fast, lightweight MQTT communication between devices and cloud platforms.
Struggling to decide?
Download our Quick Guide to choose faster, explore our product comparison, or contact our technical team for help.
Why NORVI Controllers?
NORVI is a leading provider of industrial automation and IoT solutions, offering versatile controllers and edge devices that bridge the gap between traditional PLC systems and modern smart automation networks. Designed for flexibility, reliability, and scalability, NORVI controllers enable seamless integration with sensors, actuators, and legacy machinery while supporting Ethernet, Wi-Fi, Bluetooth, and cellular connectivity for real-time monitoring and control. Developer-friendly and compatible with multiple programming environments, NORVI devices allow for rapid prototyping and deployment. With modular expansion options, local data logging, and open-source firmware, NORVI empowers businesses to implement cost-effective, scalable, and future-ready industrial automation solutions.
Industrial-Grade Build
Rugged enclosures and components compliant with IEC 61131-2 and EN 61010-1 standards.
Versatile I/O Options
Supports digital inputs, relay outputs, analog inputs, and transistor outputs for flexible integration.
Industrial-Grade Build Multiple Communication Protocols
Modbus RTU/TCP, MQTT, HTTP/HTTPS, and OPC UA for seamless network integration.
Built-in Connectivity
Ethernet, Wi-Fi, and Bluetooth capabilities for remote monitoring and control.
Real-Time Clock
Integrated DS3231 RTC with battery backup ensures accurate timekeeping during power outages.
MicroSD Card Support
Local data logging for offline backup and reduced cloud dependency.
Programmable via Multiple IDEs
Compatible with Arduino IDE, ESP-IDF, and CODESYS for flexible development.
Modular Expansion
Supports additional I/O modules for scalable automation solutions.
Integrated Display
Built-in OLED/TFT displays and buttons for local monitoring and manual control.
Compact & DIN-Rail Mountable
Space-efficient design suitable for control panels and constrained environments.
Low Power Consumption
Energy-efficient design, ideal for battery-operated or energy-sensitive applications.
Open-Source Firmware
Customizable firmware for developers to tailor controllers to specific needs.
Local Support & Documentation
Comprehensive guides, datasheets, and local support ensure smooth deployment.
Cost-Effective
Affordable alternative to traditional PLCs without compromising functionality.
Scalable & Future-Proof
OTA firmware updates and modular design enable easy upgrades and scalability.
RS-485 Industrial Bus Support
RS-485 is critical for robust industrial communication, supporting Modbus RTU and long-distance wired networks.
Arduino-Compatible Platform
Arduino Compatibility ensures developer-friendly programming, rapid prototyping, and flexibility with the existing Arduino ecosystem.
Got question?
From choosing the right controller to after-sales support, our team is ready to assist every step of the way.