EQSP32CL-X – Industrial IoT ESP32 PLC with External Antenna LoRa®

Description

EQSP32CL-X is a next-generation, industrial-grade ESP32-S3 PLC built around the powerful 240 MHz dual-core ESP32-S3 SoC with 512 kB RAM and 8 MB Flash, combining high I/O density, advanced wireless connectivity, and flexible software-defined functionality for Industrial IoT applications. Equipped with an external antenna Semtech SX1262 LoRa® radio, Wi-Fi, and Bluetooth® Low Energy, EQSP32CL-X is designed for long-range wireless communication, custom industrial networking and smart automation deployments.

This controller features 16 universal I/O terminals, all fully configurable in software. Each terminal can operate as a digital input, solid-state output, switch input with customizable debounce timing, or custom implementations. For applications requiring analog sensor integration, pins 1 to 8 support advanced analog input modes including 0–10 V voltage input, 4–20 mA, 0-20mA current loop input and thermistor-based temperature sensing.

Industrial communication is seamless with native RS232, RS485 (half-duplex), and CAN-Bus interfaces, enabling implementation of widely used protocols such as Modbus RTU, DMX512, CANopen and other custom serial protocols. This makes EQSP32CL-X well suited for integration into a wide variety of industrial control, monitoring, and automation systems.

Its modular expansion system further increases platform flexibility with support for specialized add-on modules including digital I/O expansion (EQXIO), analog input expansion (EQXAI), PT100 RTD sensing (EQXPT), thermocouple measurement (EQXTC), 2G connectivity (EQX2G-X), and pH monitoring (EQXPH). These are handled through an internal automatic addressing and characterization architecture, making it easier to scale installations and simplify device mapping.

At the heart of its long-range wireless capability is the Semtech SX1262 LoRa® transceiver, selected for strong link performance and reliable operation in demanding industrial environments. With high receiver sensitivity and up to +22 dBm transmit capability, it provides a solid foundation for stable communication across distributed systems. This makes EQSP32CL-X especially suitable for custom industrial wireless networks, remote monitoring, and long-range control applications.

Built on the same platform concept as the other EQSP32 variants, EQSP32CL-X integrates LoRa using one of the system SPI interfaces while leaving one SPI interface available for the developer. For applications requiring higher-level protocol stacks, LoRaWAN may be implemented in firmware or by using third-party libraries.

The built-in MQTT integration features a predefined topic structure, making EQSP32CL-X instantly compatible with Node-RED workflows and enabling automatic discovery in Home Assistant with no manual configuration required. With the EQConnect mobile app, users can provision Wi-Fi credentials, configure timezones, and monitor both I/O states and modes in real time.

EQSP32CL-X may be programmed via the front-facing USB-C programming port using Arduino IDE, and Visual Studio Code. Enhanced by the intelligent EQ-AI assistant, developers can auto-generate setup code from wiring diagrams or plain-English descriptions, optimize performance, and debug logical or functional issues. EQ-AI provides guided support through every stage of development, from concept to deployment.

EQSP32CL-X offers the power and flexibility of an embedded controller with the convenience and reliability of an industrial-grade PLC, making it an excellent choice for smart automation, remote monitoring, and long-range Industrial IoT applications.

View datasheet.

 

Key Benefits of EQSP32 with LoRa (EQSP32CL-X)

• Fully software-configurable I/O for maximum flexibility
• Supports 0–10 V analog voltage input (AIN) on pins 1–8
• Supports 4–20 mA current loop input (CIN) on pins 1–8
• Special analog modes: Relative analog input (RAIN) and temperature input (TIN) on pins 1–8
• All 16 terminals configurable as digital inputs, switch inputs, or solid-state outputs
• Integrated SX1262 LoRa, RS232, RS485 (half-duplex), and CAN-Bus interfaces
• Supports long-range custom industrial wireless networking using LoRa
• Compatible with industrial protocols such as Modbus RTU, DMX512, and CANopen
• Custom or third-party software support for LoRa, RS232, RS485, and CAN-Bus implementations
• LoRaWAN may be implemented using custom firmware or third-party libraries
• Modular expansion system with automatic addressing and device recognition
• Compatible with EQXIO, EQXAI, EQXPT, EQXTC, EQX2G, and EQXPH expansion modules
• Built-in MQTT with predefined topics for Node-RED and auto-discovery in Home Assistant
• EQConnect mobile app for Wi-Fi provisioning, timezone setup, and real-time I/O monitoring
• EQ-AI assistant for code generation, optimization, and debugging support
• DIN-rail mountable with screw terminals for easy installation and integration
• ESP32-S3 core with 240 MHz dual-core CPU and 8 MB Flash for advanced embedded applications
• USB-C programming interface for fast and easy development access
• End-to-end solution for Industrial IoT applications
• Real-time monitoring and control using IoT platforms or custom solutions
• Extensive community support for ESP32 applications and examples

Technical Specifications of EQSP32 with LoRa (EQSP32CL-X)

Audio IndicationIntegrated buzzer for system alerts

Digital Inputs

16x protected, configurable 24V-tolerant digital inputs (all terminals supported)

Analog Inputs

8x protected, configurable analog inputs (0–10V) on terminals 1–8

Current Inputs

8x software-selectable 4–20mA inputs on terminals 1–8

Special Analog Modes

Relative (RAIN) and Temperature (TIN) input modes on terminals 1–8

Outputs

16x protected, configurable solid-state pull-down switches (PWM-capable)

Processor

240 MHz Dual-core ESP32-S3 SoC

Memory

8MB Flash, 512kB RAM

Connectivity

USB-C (programming & monitoring) Wi-Fi + Bluetooth® Low Energy SX1262 LoRa RS232 (protected) RS485 half-duplex (protected) CAN-Bus (protected)

Antenna

Internal (for Wi-Fi/BLE) External SMA connector (for LoRa)

Programming

Arduino-compatible (C/C++) via Arduino IDE and VS Code

Date/Time

NTP sync with timezone and automatic daylight-saving adjustment

IP Protection

IP20

Supply Input Voltage

7V – 26V DC

Supply Output Voltage

5V DC @ 1A (regulated auxiliary output)

Operating Temperature

-20 °C to +55 °C (-4 °F to 131 °F)

Visual Indications

Power LED: Device power status Status LED: System and fault state WiFi LED: Wireless connection status Bluetooth LED: BLE connection status

Certification and Compliance

Applicable Standards for CE Compliance under Directive 2014/53/EU (RED):

Area	Applicable Standard(s)	Safety (Electrical)	EN IEC 62368-1:2020 + A11:2020	Outdoor Safety	EN 62368-1 Annex Y	RF Exposure / Health	EN IEC 62311:2020
EN 50566:2017 EN 62479:2010 EN 50663:2017
EN 50665	EMC (General/IT)	EN 55032
EN 55024 (or EN 55035)	EMC (Wireless)	ETSI EN 301 489-1 V2.2.3
ETSI EN 301 489-17 V3.2.4	Industrial EMC	ETSI EN 303 446-1 V1.2.1 (references EN 61000-6-2, EN 61000-6-4, and IT EMC standards)	Radio (WiFi/BLE)	ETSI EN 300 328 V2.2.2 (Full + Spurious only)
ETSI EN 300 440 V2.2.1 (Full + Spurious only)
ETSI EN 301 893 V2.1.1 (Spurious only)	Environmental	Directive 2011/65/EU (RoHS)

 

Functional Block diagram of EQSP32 with LoRa (EQSP32CL-X)

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