The UPS still needs to have a case ... which can automatically patch between incoming line voltage, and the battery backup. He already had one of these switches in place for use with a generator ...
The I-211M-L modem is actually equipped to run on backup battery power ... Some neat cabling to keep the battery charged later, and you’ve got a working UPS setup to keep the comms online.
battery backup for data center, medical and industrial customers. It provides power for energy storage and emergency backup power for uninterruptible power supplies (UPS) for IT infrastructure. The ...