There is a way to turn off the beeps on the APC UPS line (at least the ES 700 I have), but it involves installing software that comes with it onto a Windows mac

There is a way to turn off the beeps on the APC UPS line (at least the ES 700 I have), but it involves installing software that comes with it onto a Windows machine, connecting to the UPS via USB and changing the settings. It's enough of a pain to do that rather than configure all 3 UPS devices in my house, I've only ever gotten around to doing it on one. Can't say I've noticed the electrical hum, except during a blackout. But I don't have mine in a bedroom.