Vertiv Liebert EXM2 - Communication through Dry Contact Port

10.3.2 Communication Through Dry Contact Port
For on-site specific needs, the UPS may need auxiliary connection to achieve functions like acquiring external equipment
status information, providing alarm signals to external devices, and remote EPO. The UPS has the following interfaces:
• Input dry contact port
• Output dry contact port
• EPO input port
For the functions and detailed information of these ports, refer to Wiring of Signal Cable
10 Communication
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Vertiv™ Liebert® EXM2 UPS User Manual