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Product comparison · 2 uninterruptible power supplies (upss)

CyberPower Online S Series Online Double Conversion USV 1000VA/900WTower, ECO Mode, LCD, USB, Smart-Slot vs Dahua Technology DH-PFM3355-2000L uninterruptible power supply (UPS) Double-conversion (Online) 2 kVA

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  • 36specifications compared
  • 23differ
  • 13identical
  • 41known for one product only

Key differences

The Dahua Technology DH-PFM3355-2000L uninterruptible power supply (UPS) Double-conversion (Online) 2 kVA has 1 kVA more output power capacity than the CyberPower Online S Series Online Double Conversion USV 1000VA/900WTower, ECO Mode, LCD, USB, Smart-Slot (2 kVA vs 1 kVA). The Dahua Technology DH-PFM3355-2000L uninterruptible power supply (UPS) Double-conversion (Online) 2 kVA has 1,100 W more output power than the CyberPower Online S Series Online Double Conversion USV 1000VA/900WTower, ECO Mode, LCD, USB, Smart-Slot (2000 W vs 900 W). The Dahua Technology DH-PFM3355-2000L uninterruptible power supply (UPS) Double-conversion (Online) 2 kVA has 10 V more input operation voltage (min) than the CyberPower Online S Series Online Double Conversion USV 1000VA/900WTower, ECO Mode, LCD, USB, Smart-Slot (90 V vs 80 V). Output frequency: 50/60 Hz on the CyberPower Online S Series Online Double Conversion USV 1000VA/900WTower, ECO Mode, LCD, USB, Smart-Slot, 50 Hz on the Dahua Technology DH-PFM3355-2000L uninterruptible power supply (UPS) Double-conversion (Online) 2 kVA. Power protection features: Input fuse, Overload on the CyberPower Online S Series Online Double Conversion USV 1000VA/900WTower, ECO Mode, LCD, USB, Smart-Slot, Overload, Overcharge, Overdischarge on the Dahua Technology DH-PFM3355-2000L uninterruptible power supply (UPS) Double-conversion (Online) 2 kVA.

  • Output power capacity
    • 1 kVA
    • 2 kVA
  • Output power
    • 900 W
    • 2000 W
  • Input operation voltage (min)
    • 80 V
    • 90 V
  • Output operation voltage (max)
    • 240 V
    • 230 V
  • Output frequency
    • 50/60 Hz
    • 50 Hz
  • Maximum current
    • 4.5 A
    • 12 A
  • Input power factor
    • 0.99
    • 0.9
  • Battery technology
    • Sealed Lead Acid (VRLA)
    • Lead-Acid

Side by side

Differences highlightedShow differences only
77 specifications
A

CyberPower

Online S Series Online Double Conversion USV 1000VA/900WTower, ECO Mode, LCD, USB, Smart-Slot

Model OLS1KECR

View product
B

Dahua Technology

DH-PFM3355-2000L uninterruptible power supply (UPS) Double-conversion (Online) 2 kVA

Model DH-PFM3355-2000L

View product
Features9 differ
Output power capacityDiffers1 kVA2 kVA
Output powerDiffers900 W2000 W
Input operation voltage (min)Differs80 V90 V
Output operation voltage (min)Known for one208 V
Output operation voltage (max)Differs240 V230 V
Output frequencyDiffers50/60 Hz50 Hz
Output voltage regulationKnown for one1%
Automatic Voltage Regulation (AVR)Known for oneYes
Maximum currentDiffers4.5 A12 A
Surge energy ratingKnown for one370 J
Heat dissipationKnown for one380 BTU/h
Efficiency (ECO mode)Known for one95%
Input power factorDiffers0.990.9
Crest factorKnown for one3:1
ECO modeKnown for oneYes
Emergency Power Off (EPO)Known for oneYes
Overload capacity (1 minute)Known for one120%
Overload capacity (10 seconds)Known for one120%
Output voltage Total Harmonic Distortion (THD)Known for one5%
EMI/RFI noise filteringKnown for oneYes
Surge protectionKnown for oneYes
Power protection featuresDiffersInput fuse, OverloadOverload, Overcharge, Overdischarge
Audible alarm modesDiffersAlarm when on battery, Low battery alarm, Overload alarm, Fault, Battery replacementAlarm when on battery, Overload alarm, Low battery alarm, Fault
Socket circuit breakerKnown for oneYes
Response timeKnown for one4 ms
Ports & interfacesidentical
AC outlet typesKnown for oneC13 coupler, Type F
Power plugKnown for oneType F
USB portKnown for oneYes
Emergency Power Off (EPO) connectorKnown for oneYes
USB 2.0 ports quantityKnown for one1
Ethernet LAN (RJ-45) portsKnown for one1
Battery2 differ
Battery replacement accessibilityKnown for oneProfessional only
Battery technologyDiffersSealed Lead Acid (VRLA)Lead-Acid
Battery capacityKnown for one9 Ah
Battery voltageDiffers12 V72 V
Number of batteries supportedKnown for one2
Typical backup time at full loadKnown for one3 min
Typical backup time at half loadKnown for one13.3 min
Battery recharge timeKnown for one4 h
Charging currentKnown for one1.5 A
Replacement battery cartridgeKnown for oneBPS24V40AC
Design3 differ
Form factorDiffersTowerRackmount
Product colourDiffersBlackBlack, Grey
Housing materialDiffersMetalMetal, Plastic
Cooling typeKnown for oneActive
LED indicatorsKnown for oneYes
Operational conditions3 differ
Storage temperature (T-T)Differs-20 - 50 °C-15 - 55 °C
Operating relative humidity (H-H)Differs0 - 95%0 - 90%
Storage relative humidity (H-H)Differs0 - 95%0 - 90%
Operating altitudeKnown for one0 - 1500 m
Non-operating altitudeKnown for one0 - 1500 m
Packaging content1 differ
Cables includedDiffersUSB cableRS-232, Input power cable
Rack mount kitKnown for oneYes
Certificatesidentical
Compliance certificatesKnown for oneCE, EAC, UKCA, RoHS
CertificationKnown for oneCE LVD: EN IEC 62040-1: 2019+A11: 2021; CE EMC: EN IEC 62040-2: 2018; EN 62040-2: 2006; EN IEC 61000-3-2: 2019+A2: 2024; EN 61000-3-3: 2013+A2: 2021
Weight & dimensions4 differ
WidthDiffers86 mm482.6 mm
DepthDiffers335 mm429.2 mm
HeightDiffers308 mm88 mm
WeightDiffers10 kg8.1 kg
Packaging data1 differ
Package weightDiffers10.9 kg10.8 kg
Package widthKnown for one570 mm
Package depthKnown for one540 mm
Package heightKnown for one185 mm
Other featuresidentical
BypassKnown for oneGreenPower UPS

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