Yeah I meant for the communications interface. I have several APC 750va's that I have the com card in (the cards are pretty cheap on ebay) so I use the LGK driver for them. Works well. I'm looking forward though to @dJOS 's UPS that he's putting together. I don't know if you've read the this thread but this is what he is building with a couple of mods... DIY- Battery Backup Hubitat- under TEN bucks-NO soldering - #296 by rlithgow1
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