Ship connected automation projects in days, not months

The EQSP32 gives you all the processing power, I/O, and connectivity options you need in a MicroPLC form factor. Program it in ladder, in code, or let an AI agent build and validate it for you. If you can imagine it, you can build it, and ship it fast.

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Sense & control anything

32-bit processing and I/O for all types of sensors and actuators

Connect from anywhere

WiFi, Bluetooth, Ethernet, LoRa, CAN bus, RS485: every option built in

AI-powered inside & out

AI that programs your device and AI that runs on it, autonomously

New Announcement · September 2026

Hardware-verified Agentic AI programming. Only on the EQSP32.

The AI writes the code. The hardware grades it.

How do you know AI-generated control code actually works? With built-in Hardware-in-the-Loop, an AI agent writes your control program, loads it onto the real EQSP32, injects sensor states and faults over a USB cable, and reads back what the controller actually did. It corrects and repeats until every test passes. Hallucinations and coding errors fail on the bench, not in the plant.

Video thumbnail: an AI agent programs and validates a water-treatment skid controller on a real EQSP32
3:46

Watch the demo: an AI agent programs and validates a water-treatment skid on a real EQSP32, unattended, in 18 minutes.

More than you’d expect
in a tiny DIN-rail controller

Connectivity, processing, and I/O that rival PLCs many times its size and price. Here’s what’s packed inside.

Processing

  • Dual Core, 240MHz ESP32-S3
  • Real-Time OS
  • 512KB RAM / 8M Flash
  • Free tools, free libraries, no license fees
See the EQSP32 Library & AI tools

Wireless

  • WiFi 802.11 b/g/n
  • Bluetooth 5.0 (BLE)
  • LoRa option
  • External Antenna option

Wired

  • 10/100 Ethernet
  • CAN bus
  • RS232/RS485/Modbus/DMX512
  • Front USB-C Programming

Input / Outputs

  • 16 Multi-mode I/O Ports
  • Digital In with debounce
  • 1A PWM Out / Smart Coil Drive
  • 4-20mA & 0-10V Analog In (8)
  • High-Speed Output to 1 MHz
  • 4 Hardware Pulse Counters
  • Expansion Modules Port
See every device type I/O ports can connect to

Electro Mechanical

  • DIN Rail Mount
  • 71×90×57mm
  • 10 to 28VDC Supply
  • 5V 1A regulated output
  • Screw Terminals
  • Power Supply Monitoring
  • Surge protection on all ports
  • CE / RoHS Certified

The Micro-PLC with MQTT in its DNA.

MQTT (the protocol behind AWS IoT, Azure IoT Hub, Node-RED, Home Assistant, and many others) is becoming the standard backbone for modern automation, connecting controllers to SCADA systems, cloud dashboards, smartphone interfaces, multi-site supervisory layers, and cloud AI analytics. Traditional MicroPLCs weren't designed for this. Adding connectivity means gateways, middleware, and complexity that compounds with every installation.

The EQSP32 was built from the ground up for connected automation. MQTT, REST APIs, NTP time sync, OTA updates, and remote diagnostics are native, not bolt-ons. No gateway. No middleware. No extra hardware on the DIN rail. No license fees.

EQSP32 MQTT connectivity diagram

Built for your industry

From smart agriculture to industrial automation: one platform that adapts to virtually any connected sensing and control requirement.

Connects to virtually anything

EQVersal® is our name for a terminal that can be anything: input, output, analog, digital, high-speed, or coil drive, all in software, no rewiring. Sixteen ports cover the full range of industrial signal types.

Digital inputDigital In
Relay outputRelay / Coil
4-20mA sensor4–20 mA
NTC thermistorThermistor
EncoderEncoder
Flow meterFlow Meter
Solenoid valveSolenoid Valve
Light / LEDLED / Light
RGB LEDRGB LED
Variable frequency driveVFD
FanFan / Motor
JoystickJoystick
+
...and more

The broadest expansion module range
of any micro-PLC in its class

The EQSP32 expansion port supports a growing collection of EQXpansion modules: analog inputs, RTDs, pH sensors, thermocouples, cellular, and more. Each module snaps on, auto-detects, and powers through the expansion bus. No configuration required.

EQSP32 with EQXpansion modules on DIN rail
Digital I/O module

10-Ch Digital I/O

Additional digital inputs and solid-state outputs for field devices and control points.

Analog Input module

8-Ch Analog Inputs

12-bit voltage and current monitoring across industrial sensors and transmitters.

PT100 module

2-Ch RTD / PT100

High-precision temperature measurement in 2/3/4-wire configurations.

Cellular module

GSM/GPRS Cellular

Wide-area connectivity for remote monitoring, telemetry, and SMS alerts.

6-Ch Thermocouple module

6-Ch Thermocouples

Broad-range temperature measurement for ovens, kilns, and thermal processing.

pH Meter module

pH Meter

Monitor acidity in pools, water tanks, aquariums, and irrigation systems.

Q3 2026 Relay and analog output module

8-Relay / 2-Analog Outs

Eight relay outputs and two 12-bit analog outputs for direct actuator and process control.

Q4 2026 Stepper motor module

Stepper Motors

Precision control for peristaltic pumps and automated machinery.

Q4 2026 Load cell module

Load Cells

Precision weight, torque, and force measurement for instrumentation.

One controller. Three ways to program it.

Most controllers lock you into a single programming model the day you buy them. The EQSP32 gives you three, all on the same hardware. Use the one that fits you, or mix them across projects. Nothing to re-buy, nothing to re-wire.

IEC 61131-3 ladder diagram and function block diagram sheets
Ladder & IEC 61131-3

Program it like the PLC it is

The EQSP32 is a supported OpenPLC target. Program it in Ladder Diagram, Structured Text, or Function Blocks with the free, open-source OpenPLC editor and runtime. The languages you’ve trusted your whole career, on modern, connected, CE-certified hardware. No license fees, no vendor lock-in.

Plain-English request turning into hardware-aware EQSP32 C code
AI-Assisted C/C++

Describe it in English. Get working C/C++.

When your application needs custom protocols, REST APIs, cloud services, or on-device intelligence, drop into full C/C++. The EQSP32 library handles the hardware details, and our AI assistant writes hardware-aware code from your plain-English description, with correct pins, modes, and library calls. All the performance, none of the embedded learning curve.

A PLC-WORLD FIRST Code written Code compiled Running hardware test 31/31 tests passed Reports generated Job completed
Agentic

AI does it ALL. By itself.

An AI agent writes, compiles, and flashes your entire application, then validates its own work on the real EQSP32 through native Hardware-in-the-Loop, unattended. Every state, fault, and timer exercised on actual silicon, not in a simulation. You review the specification and the test report; the hardware signs off the code. It is as amazing and revolutionary as it sounds. Only at Erqos.

Diagnose from the doorway.
Update from the office.

Traditional PLCs require a laptop, a cable, and an open cabinet just to see what is happening. The EQSP32 was designed for a different model.

EQMonitor smartphone app showing live state of all EQSP32 I/O ports

Live I/O diagnostics over Bluetooth

Stand next to the panel and see the real-time state of every port on your smartphone, digital and ANALOG. No cable, no laptop, no open cabinet.

OTA firmware and logic updates

Push firmware or application updates over WiFi or Ethernet to any EQSP32 on your network, or anywhere in the world. No panel access, no travel.

Learn more about the EQConnect app
Choosing a controller?

See how EQSP32 stands out

Every controller decision comes down to what it can do and how it stacks up. We’ve made both easy.

EQSP32 next to two of the most popular micro-PLCs in its class

Support that feels like part of your team

Erqos technical support engineer

Open-architecture hardware usually means “you’re on your own.” Not at Erqos. Our engineers are an extension of your team, ready to deliver immediate, impactful solutions. And if you’d rather have us build it for you, we do that too.

Fast response engineer-to-engineer support
Electronics, PLCs & software expertise
Project guidance from concept to deployment
Integration services: we build your solution for you

Hear it from the engineers
who build with EQSP32

Ready to build something?

Get started with the EQSP32 today. We ship worldwide.

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