Is it compatible with synology nas ds220+ for safe shutdown, in case of power outage?

It is not on the Synology NAS list of compatible UPSs.

Will this power a Cpap machine? For how long?

I would not take a chance, it would not last very long...also i would not trust it, I bought 2 and one went bad the first week.

Si sirve para PS5 y para alimentar cualquier equipo electrónico que se conecte a un tomacorriente, se debe tomar en cuenta el consumo del equipo para saber el tiempo de respaldo que puede dar el UPS según su capacidad

What regulatory approvals does it have? e.g. UL, CSA, ETL

The product chassis are not marked with UL, CSA or ETL approval. As such, I do not think SKE Energy UPS’s have been tested by these companies. I own three 1250VA/750W units and they work as described by SKE. They have been operational for more than a year. They have supported my systems through many power issues.

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SKE SK425 425VA/240W UPS Battery Backup & Surge Protector - Uninterruptible Power Supply with LCD Display, AVR Voltage Regulation, 6 Outlets, Backup Power for PC, Router, NAS & Home Office

SKE SK425 425VA/240W UPS Battery Backup & Surge Protector - Uninterruptible Power Supply with LCD Display, AVR Voltage Regulation, 6 Outlets, Backup Power for PC, Router, NAS & Home Office

Product ID: 502077389

Details

Battery Cell Composition
Sealed Lead
Brand
SKE SMART KEY
Color
Black
Material
Metal
Voltage
120 Volts

⚡425VA/240W power capacity

🔋Sealed Lead Acid battery backup

🖥️6 outlets (4 battery + 2 surge-only)

€ 243.00

Duties & taxes included

In stock

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Description

🔌 Power up your productivity—never miss a beat with SKE SK425 UPS!

VERSATILE CONNECTIVITY - Six outlets including 4 battery-backed and 2 surge-only ports to safeguard and power all your essential devices.
REAL TIME POWER INSIGHTS - Intelligent LCD display delivers live updates on voltage, battery status, and load levels for total control.
QUIET MANAGED RELIABILITY - Silent operation with UPS management software ensures safe shutdowns and zero distractions during power events.
UNINTERRUPTED PRODUCTIVITY - Keep your home office and network devices powered through outages with 425VA/240W backup capacity.
SMART VOLTAGE STABILIZATION - Automatic Voltage Regulation (AVR) smooths out power fluctuations to protect your gear from spikes.

The SKE SK425 UPS offers a robust 425VA/240W backup power solution with sealed lead acid battery technology, featuring 6 outlets (4 with battery backup and 2 surge-only). Its Automatic Voltage Regulation stabilizes incoming power, while the built-in LCD provides real-time system monitoring. Designed for home offices and network devices, it includes quiet operation and management software for seamless, uninterrupted workflow during outages.

Specifications

ASIN	B0BJ68TST8
Amperage	2 Amps
Battery Cell Type	Sealed Lead Acid
Best Sellers Rank	#46 in Computer Uninterruptible Power Supply Units
Brand	SKE SMART KEY ENERGY
Color	Black
Customer Reviews	4.3 4.3 out of 5 stars (480)
Enclosure Material	Metal
Form Factor	Tower
Frequency Range	60 Hz
Input Voltage	120 Volts (AC)
Item Dimensions	12.4 x 3.94 x 5.63 inches
Item Weight	8.82 Pounds
Manufacturer	SKE SMART KEY ENERGY
Maximum Power	240 Watts
Model Number	SKE Back UPS
Number of Outlets	6
Output Current	2 Amps
Output Voltage	120 Volts (AC)
Output Wattage	240 Watts
Power Plug Type	Type B - 3 pin (North American)
Voltage	120 Volts
Warranty Description	1 year for battery, 2 years for machine, against manufacturer
Wattage	240 watts

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