Tripp-Lite SmartOnline SUT20K Manual Del Propietário página 29

6. Communication Interfaces
9 Charger Detection Port
The charger detection port is used to connect with an external charger box. With this port, the UPS can detect the operating status
of the external charger box and control its switch.
As shown in the diagram below, there are two signal sources. One signal source controls the on/off charging mechanism and the
other signal source detects the charging status (fail/no fail).
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