Honeywell Galaxy G2 RS485 Bus

I always fancied adding Ethernet to my home Alarm system, even though I don’t have any particular use for it. I live in a pretty safe area and it rarely has false alarms or anything else I really need to monitor. Besides, if you’re at work, miles from home and in the middle of something, what what are you going to do if you get a notification that your house alarm has gone off?

Eventually, by chance, I picked up a second hand official Ethernet adapter for the alarm at a car boot sale, but it turned out the firmware was too old and the cable to update it is surprisingly expensive, and the update itself not publicly available anyway. I was already aware of the LCE-01 from SM Security Alarms as a cheaper alternative, with more functions like a Virtual Key Pad app, but £66 for a device I didn’t really have a use for was still a bit steep for someone who hates to part with money. I contacted the maker to find out about updating the firmware on mine and he offered me a good deal on a part exchange so I went for it.