Domoticz is a very light weight home automation system that lets you monitor and configure miscellaneous devices, including lights, switches, various sensors/meters like temperature, rainfall, wind, ultraviolet (UV) radiation, electricity usage/production, gas consumption, water consumption and many more. Notifications/alerts can be sent to any mobile device.
Free / Open Source
Linux / Windows / Embedded Devices
Supported by Domoticz
LAN Ethernet IP 8 channels WEB Relay board
RS485 8 channels Relay board
Domoticz lua script to convert XML output from KMTronic DS1820 LAN module
info.kmtronic.com/domoticz-lua-script-to-convert-xml-output-from-kmtronic-ds1820-lan-module.html