Earlier today I found a cracking Facebook Marketplace detail for a lightly used APC Uninteruptable Power Supply unit, an APC Back-UPS 750 ES specifically. Thing is, my UnRAID Server (a Lenovo TS430) is in our bedroom at the moment. If the power goes off in the night for a bit, I don't want the UPS beeping away to wake me up just to tell me it's working and asking if I'm proud of it. Looking around, APC say that you have to install their PowerChute software to disable alarms... didn't fancy that.