
My Outback MX60 controllers eventually broke and showed their age. The FM60 controllers are nearly identical in terms of form factor and mounting holes. The only minor issue is that the FM60 doesn't have a connector on the right side, so you can't plug a Mate cable into a nearby FM60 if you have two. Contrary to what one of the reviewers mentioned, this controller looks like it was recently made and in the box was a Q&A sheet from a month or two ago. I hooked it up to my home PV system and it immediately worked as expected. It's nice that the FM60 automatically detects battery voltage (although you can change the suggested voltage during setup).