Planet Networking & Communication IGSW-24040T User Manual page 38

User's Manual of IGSW-24040T
Figure 2-13 Wires DI0 and DI1 to Open Detector
4. There are two Digital Output groups for you to sense IGSW-24040T port faile or power fail and issue a high or low signal
to external device. As following topology shows how to wire DO0 and DO1.
Figure 2-14 Wires DO0 and DO1 to Open Detector
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