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UPS topology Line-Interactive | Output power capacity 1.55 kVA | Output power 1350 W | Waveform Sine | Input operation voltage (min) 150 V | Input operation voltage (max) 294 V | Input frequency 47/70 Hz | Output frequency 50/60 Hz | Heat dissipation 654 BTU/h | Number of input phases 1 | Number of output phases 1 | Efficiency 98.2 % | AC outlet types C13 coupler | Power plug C14 coupler | USB port Yes | Serial interface Yes | Battery technology Sealed Lead Acid (VRLA) | Battery voltage 6 V | Form factor Rackmount | Colour Black,Silver | Display type LCD | LED indicators Yes | Operating temperature (T-T) 0 - 40 °C | Operating altitude 0 - 3000 m | Rack mount kit Yes | Weight 18.8 kg

DH-SG4028LP | Type Managed | Switch layer L2 | Cloud-managed Yes | Web-based management Yes | 2xBasic switching RJ-45 Ethernet ports quantity | Basic switching RJ-45 Ethernet ports type Gigabit Ethernet (10/100/1000) | 2xInstalled SFP modules quantity | Switching capacity 56 Gbit/s | Forwarding rate 41.66 Mpps | Product colour Black | Power source AC | Power supply included Yes | Power over Ethernet (PoE) Yes | 24xPower over Ethernet (PoE) ports quantity | Power over Ethernet (PoE) power per port 30 W | Total Power over Ethernet (PoE) budget 240 W | Width 440 mm | Depth 220 mm | Height 44 mm | Weight 2370 g

DH-SG4010-2F | Type Managed | Switch layer L2 | Quality of Service (QoS) support Yes | Web-based management Yes | 8xBasic switching RJ-45 Ethernet ports quantity | Basic switching RJ-45 Ethernet ports type Gigabit Ethernet (10/100/1000) | 2xSFP module slots quantity | Console port RJ-45 | Full duplex Yes | Fiber ethernet cabling technology 1000BASE-X | Switching capacity 20 Gbit/s | Forwarding rate 14.88 Mpps | Product colour Black | Power source DC | Width 104 mm | Depth 240 mm | Height 28 mm | Weight 640 g