3 ms·
When the power goes out on an APC UPS, just press and hold the "On" button until it chirps. Alarms are silenced. Now imagine the sound at the APC factory, when
by quesera 6y ago
When the power goes out on an APC UPS, just press and hold the "On" button until it chirps. Alarms are silenced.
Now imagine the sound at the APC factory, when the power goes out and thousands of UPSes on the charging racks start beeping in sync...! (this is not a hypothetical)