This module can communicate with an Arduino with the sketch from https://github.com/henryk/openmili to communicate with milight/limitlessled/etc. 2.4GHz LED Bulbs.
Are you still maintaining this? As part of pimatic we are looking at supporting node v8 and node v10 setups while keeping compatibility with node v4 for now. For this reason a migration to serialport v6 ist required as earlier raise build error with node v8 and 10 while v7 of seriaport no longer supports node v4. Are you in the position to work on this? I am happy to assist as some code changes may be required.