Ethernet P1 Dongel Pro+ (slimme meter lezer)

An ESP32-S3 + W5500 Ethernet dongle that connects P1 smart meters, water sensors, S0 pulse, and Modbus RTU data to Home Assistant/ESPHome.

matthew

Published June 08, 2026

166 UCC

Original author: Smartstuff · the NetherlandsOriginal source (new tab)

Project description

Smartstuff Ultra X2 / Ultra P1 H2O — W5500 Ethernet-Based Smart Meter, Water, and Modbus Energy Monitoring Dongle Recommended Components WIZnet W5500 ESP32-S3 Smartstuff Ultra X2 Dongle Smartstuff Ultra Mini Dongle P1 Smart Meter Interface P1 Output / P1 Bridge Water Sensor / H2O Module S0 Pulse Input RS485 / Modbus RTU Module USB-C RGB Status LED ESPHome DSMR-API Home Assistant Domoticz / Homey / OpenHAB 📌 Overview The Smartstuff Ultra X2 Dongle is a smart energy monitoring dongle designed to read P1/DSMR smart meter data commonly used in the Netherlands, Belgium, and other European smart…

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