DS-PM-RSO4(O-STD) Review
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DS-PM-RSO4(O-STD) Hikvision DS-PM-RSO4 Wired I&O Expander
Hikvision DS-PM-RSO4 Wired I&O Expander, RS485, 4-relay output module / Capacity: 30 VDC / 1 A (For DS-19Axx-BN/DS-19Axx-BNG)