Same size as popular RS485-TTL module for more compatibility.

As a software part, you can use ebusd with different connection types:

TTL-UART - you need converter that doesn’t buffer too much data (CP2102 or FTDI based (like FT232)) 👍 ESP8266 / ESP32 enhanced ebusd protocol using ebusd-esp firmware (only Wi-Fi connection now) 🎉

Raspberry Pi internal UART port can be used with some preparations, but I recommend ttyebus kernel module which is with the lowest latency possible 🚀

ser2net compatible firmware (ESPEasy, ESP-Link, ESPHome, Tasmota, etc) or hardware converter with some restrictions (Receive - OK; Transmit - may be errors) 🤔

Also available HA integration between ebusd daemon and Home Assistant 🏚

Some items ship from Germany and others from China. Please check.