Automate more. Connect better.
Discover the new Smart IO 4 and Smart IO 8 — industrial controllers with full connectivity and maximum flexibility for your projects.
Smart, simple, and powerful PLCs.
Most PLCs are expensive, hard to integrate, and lack modern connectivity.
Does your project really deserve outdated or locked-down hardware?
Simple ESP: Automation made accessible and hassle-free
At Simple ESP, we design compact, powerful, and open PLCs.
Powered by the ESP32 chip, our controllers offer the best of both worlds:
Industrial reliability + Open-source flexibility.
- Arduino and Platform IO compatible
Program freely — no proprietary software, no expensive licenses. - Full connectivity out of the box
WiFi, Bluetooth, Ethernet, and RS485 included. No add-ons needed. - Optically isolated inputs
Real protection for your systems. Industrial-grade safety and durability. - Compact size with pluggable connectors
Easy installation in control cabinets or tight spaces. - Qwiic-ready
Plug in I2C sensors in seconds — no soldering required.
Smart IO 4
Small, robust, perfect for basic automation.
4 optically isolated digital inputs
4 relay outputs (up to 250V / 5A)
RS485, WiFi, Bluetooth, Ethernet
Fully compatible with Arduino / PlatformIO
More Details
Smart IO 8
Double the I/Os for more demanding projects.
8 optically isolated digital inputs
8 relay outputs (up to 250V / 5A)
2 Qwiic connectors
Ideal for access control, industrial automation, or advanced home automation
More DetailsChoose your PLC. Take control.
No more overcomplicated setups.
With Simple ESP, you’re in control — from code to installation.