Overview of Hikvision DS-PM1-O4H-H
The Hikvision DS-PM1-O4H-H is a wired 4-way power relay module for Hikvision hybrid alarm systems. It provides 4 on-board power relays, each handling current of up to 16A, so the alarm system can switch lighting, pumps, air conditioning or other electrical loads based on alarm events or schedules. Powered by Speed-X technology, it offers one uplink port for control panel connection and one downlink port to cascade the next expander, simplifying wiring across larger installations. Front and rear tamper protection and power/fault LEDs support reliable operation. It is suited to villas, compounds, offices, factories and warehouses that need automation tied to security.
Technical Specifications – Hikvision DS-PM1-O4H-H
Hardware features
| Serial port | 1 TTL serial port |
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| Tamper-Proof | Support (front and rear) |
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| Bus | 2×Speed-X bus, 1 uplink for control panel connection and 1 downlink for next expander |
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Display
| LED Indicator | 1 for power,1 for fault |
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Electrical characteristics
| Power supply | 9 to 24 VDC |
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| Typical voltage | 12 VDC |
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| Power consumption | Maximum current: 210 mA@12 VDC Quiescent current: 65 mA@12 VDC |
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General
| Dimension(WxHxD) | 110 mm × 155 mm × 32.5 mm |
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| Shell material | Plastic |
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| Weight | 333.1g |
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| Operation temperature | -10°C to 40°C |
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| Operation humidity | 10% to 90% |
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Source: Hikvision official website. Specifications are subject to change by the manufacturer.