Features
Basic Backup Power Protection
Provides temporary battery backup during mains power failures, helping connected devices continue operating or shut down safely.
Wide Capacity Range
Available from 500VA to 3000VA, covering common backup power needs for home, office, retail, and small business equipment.
Multiple Voltage Options
Supports 110/120VAC or 220/230/240VAC input and output options, making it suitable for different regional power environments.
Automatic Frequency Sensing
The UPS supports 50/60Hz auto sensing, allowing it to adapt to different mains frequency conditions.
Fast Transfer to Battery Mode
When utility power fails, the UPS transfers to battery mode within 6–10ms, providing backup power for connected equipment.
Simulated Sine Wave Output
In battery mode, the UPS provides simulated sine wave output, suitable for many basic electronic devices and office equipment.
Full Protection Functions
Built-in protection includes short-circuit protection, overload protection, battery low-voltage protection, and shutdown charging protection.
LCD or LED Display Options
LCD display can show input voltage, output voltage, load level, battery capacity, UPS fault, and overload status. LED indicators provide simple status information such as AC normal, backup mode, and battery/load level.
Audible Alarm Notifications
The UPS provides audible alarms for battery mode, low battery, overload, and battery replacement conditions, helping users identify system status quickly.
Optional USB / RS-232 Communication
Optional USB or RS-232 communication supports power management and monitoring for compatible computer systems.
RJ45 / RJ11 Protection
RJ45 / RJ11 interface support helps protect connected communication lines such as network or telephone lines from certain surge events.
Quiet Operation
With noise level below 40dB, the UPS is suitable for homes, offices, service counters, and small working environments.
Compact Design
Compact dimensions and lightweight structure make the UPS easy to place under desks, near routers, beside POS counters, or in small equipment areas.
Specifications
| MODEL | LK-500 | LK-650 | LK-800 | LK-1000 | LK-1500 | LK-2000 | LK-2000B | LK-3000 |
| CAPACITY | 500VA/300W | 650V/390W | 800VA/480W | 1000VA/600W | 1500VA/900W | 2000VA/1200W | 2000VA/1200W | 3000VA/1800W |
| INPUT | ||||||||
| Voltage | 110/120 VAC or 220/230/240 VAC | |||||||
| Voltage Range | 81-145 VAC or 145-275 VAC | |||||||
| Frequency Range | 60/50 Hz (Auto Sensing) | |||||||
| OUTPUT | ||||||||
| Output Voltage | 110/120 VAC or 220/230/240 VAC | |||||||
| AC Voltage Regulation (Batt. Mode) | ±10% | |||||||
| Frequency Range (Batt. Mode) | 50 Hz or 60 Hz ± 1 Hz | |||||||
| Transfer Time | 6-10 ms | |||||||
| Waveform (Batt. Mode) | Simulated Sinewave | |||||||
| BATTERY | ||||||||
| Battery Type & Number | 12V/7Ah x 1 | 12V/7Ah x 1 | 12V/9Ah x 1 | 12V/7.5Ah x 2 | 12V/9Ah x 2 | 12V/9Ah x 2 | 12V/7Ah x 4 | 12V/9Ah x 4 |
| Typical Recharge Time | 8 hours recover to 90% capacity | |||||||
| PROTECTION | ||||||||
| Full Protection | Short circuit, overload, battery low voltage protection and shutdown charging function | |||||||
| INDICATORS | ||||||||
| LCD Display | Input Voltage, Output Voltage, Load Level, Battery Capacity, UPS Fault, Overload | |||||||
| LED Display | AC Normal Indicator, Backup Indicator, Battery Capacity (Load Level) | |||||||
| ALARM | ||||||||
| Battery Mode | Sounding every 4 seconds | |||||||
| Low Battery | Sounding every second | |||||||
| Overload | Sounding every 0.5 seconds | |||||||
| Battery Replacement Alarm | Continuously sounding | |||||||
| PHYSICAL | ||||||||
| Dimension, DxWxH (mm) | 307 x 90 x 137 | 330 x 120 x 190 | 330 x 120 x 190 | 330 x 120 x 190 | 330 x 120 x 190 | 330 x 120 x 190 | 390 x 140 x 210 | 390 x 140 x 210 |
| Net Weight (kgs) | 4 | 4.5 | 6 | 9 | 11 | 12 | 17 | 20 |
| ENVIRONMENT | ||||||||
| Humidity | 0-90 % RH @ 0-40℃ (Non-condensing) | |||||||
| Noise Level | Less than 40dB | |||||||
| MANAGEMENT | ||||||||
| Optional USB/RS-232 Port | Supports Windows®2000/2003/XP/Vista/2008,Windows®7/8/10,Linux and MAC | |||||||
| Other Interfaces | RJ45/11 | |||||||
| * Product specifications are subject to change without further notice. | ||||||||
Applications
Personal Computers
Helps protect desktop computers from short power outages, voltage disturbances, and unexpected shutdowns.
Home Office Equipment
Suitable for home office computers, monitors, routers, modems, and small office electronics.
Routers and Modems
Provides backup power for routers, modems, and basic network devices, helping maintain internet connectivity during short outages.
POS Terminals
Supports POS terminals, cash registers, barcode scanners, and payment-related devices in retail stores, cafés, restaurants, and small shops.
Printers and Office Devices
Helps protect printers, fax machines, and basic office equipment from short blackouts and power disturbances.
Security Systems
Can provide backup power for selected CCTV cameras, alarm systems, access control devices, and small surveillance systems.
Small Business Equipment
Ideal for small shops, service counters, reception desks, and light commercial environments that need affordable basic backup power.
Residential Electronics
Suitable for selected household electronics such as computers, network devices, smart home hubs, and low-power communication equipment.
Frequently Asked Questions
What is an Offline / Standby UPS used for?
An Offline / Standby UPS is used to provide basic backup power and surge protection for home, office, retail, and small business equipment during short power outages or power disturbances.
What capacity range is available?
This UPS range covers 500VA to 3000VA, including common models for computers, routers, POS systems, office devices, and basic electronics.
What is the transfer time of this UPS?
The transfer time is typically 6–10ms. This means the UPS switches to battery mode shortly after mains power fails.
What type of output waveform does it provide?
In battery mode, this UPS provides simulated sine wave output. It is suitable for many basic electronic devices, but sensitive equipment or active PFC power supplies may require a pure sine wave or online UPS.
Is this UPS suitable for servers or data centers?
This UPS is better suited for personal computers, routers, POS systems, printers, and small office equipment. For servers, data centers, medical systems, or mission-critical equipment, an online UPS is usually more suitable.
Does this UPS have LCD and LED display options?
Yes. Depending on the model or configuration, the UPS may provide LCD or LED display options. The LCD version can show more detailed status information, while the LED version provides simple operating indicators.
What protection functions are included?
The UPS includes short-circuit protection, overload protection, battery low-voltage protection, and shutdown charging protection.
Can this UPS protect routers and modems?
Yes. It can provide backup power for routers, modems, and basic network equipment, helping maintain internet connectivity during short outages.
Does this UPS support computer monitoring?
Optional USB or RS-232 communication ports are available for monitoring and power management with compatible computer systems.
What information is needed to choose the right model?
To choose the right model, you should provide the equipment list, total load in watts, input/output voltage, required backup time, display preference, and whether USB/RS-232 communication is needed.
