# UPS QOLTEC Monolith Double-conversion 0.45 kVA (240 W), 2x Type F outlets, LCD, USB-B, RJ-45

**URL:** https://aio.lv/en/product--qoltec-53977--4642719
**Data updated:** 2026-01-21 10:57 (EET)
**Category:** UPS
**Manufacturer:** QOLTEC
**Manufacturer code:** 53977
**EAN:** 5901878539775
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 45.49 €
**Prices and availability valid until:** 2026-07-11 23:59
**Price without VAT (21%):** 37.60 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--qoltec-53977--4642719

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | Tuesday | free |
| Pickup points | 19.06.2026 | 1.99 EUR |
| Courier delivery to door | 19.06.2026 | 4.99 EUR |

## Summary description

Online (double-conversion) UPS QOLTEC Monolith with 0.45 kVA (240 W) output power provides pure sine output and ±5% voltage regulation. Compact black unit with LCD, buttons and LED indicators, built-in fan, 2 Type F AC outlets, USB Type-B and serial (RJ-45) ports, 2x Ethernet RJ-45, supports one 12 V 4.5 Ah battery. Ideal for protecting small servers, network devices and workstations.

## Long description

Qoltec Monolith UPS Double-conversion 0.45 kVA 240 W is a compact uninterruptible power supply designed to protect computers and other sensitive electronic devices from power disturbances. The unit provides continuous power flow with double-conversion topology, two AC outlets and a USB Type-B port. Built-in LCD and passive cooling allow monitoring and quiet operation while the maintenance-free internal battery supplies emergency power during outages.
Advantages
This UPS features double-conversion topology for stable, continuous output regardless of input fluctuations, automatic voltage regulation to limit stress on the battery, and a modified-sine output suitable for typical computer and networking equipment. The device includes protection against overload, battery over-discharge and overcharge, RJ45 surge protection for network lines, audible alarms for low battery and faults, and a cold-start function. A built-in LCD provides clear status information and the compact black housing with passive cooling supports reliable, quiet operation.
Suitable for
Desktop computers and workstations
Home office and small office equipment
Network devices requiring RJ45 surge protection
External drives and peripherals that operate with modified sine output
Key specifications
Output power: 240 W
Capacity: 0.45 kVA
AC outlets: 2
USB port: 1 x USB Type-B (USB 2.0)
Topology: Double-conversion
Battery: 1 built-in maintenance-free battery; charging to 90% in up to 6 hours
Display: LCD
Protection: AVR, overload, over-discharge, overcharge, RJ45 surge protection
Color: Black
Weight: 3.544 kg
How to use
Connect the UPS to mains power, attach your computers and peripherals to the two AC outlets and connect the USB Type-B port to a PC if you need power management software monitoring. When mains power is present the UPS charges the internal battery and supplies conditioned power; in case of mains failure the battery provides power so you can save work and shut down equipment. Use the LCD to check status, battery level and fault indicators. The cold-start function allows powering a device directly from the UPS when mains power is absent.
Usage recommendations
Place the UPS in a well-ventilated, dry location away from heat sources. Regularly check battery status via the LCD and test the shutdown sequence with connected equipment. Avoid connecting devices that require a pure sine wave inverter if specified by the device manufacturer.

## Specifications

### Ports & interfaces

| Feature | Value |
|---|---|
| AC outlets quantity | 2 AC outlet(s) |
| USB 2.0 ports quantity | 1 |
| Serial interface type | RJ-45 |
| Ethernet LAN (RJ-45) ports | 2 |
| AC outlet types | Type F |
| Serial interface | Yes |
| USB port | Yes |
| USB port type | USB Type-B |

### Battery

| Feature | Value |
|---|---|
| Number of batteries supported | 1 |
| Battery voltage | 12 V |
| Battery capacity | 4.5 Ah |

### Design

| Feature | Value |
|---|---|
| Product colour | Black |
| Form factor | Compact |
| LED indicators | Y |
| Control type | Buttons |
| Cooling type | Passive |
| Display type | LCD |
| Built-in fan | Yes |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 3.544 kg |
| Height | 144 mm |
| Width | 100 mm |
| Depth | 286 mm |

### Operational conditions

| Feature | Value |
|---|---|
| Operating temperature (T-T) | 0 - 40 |

### Features

| Feature | Value |
|---|---|
| Output power capacity | 0.45 kVA |
| Noise level | 40 dB |
| Input frequency | 50/60 |
| Output power | 240 W |
| Power protection features | Short circuit, Overload, Over voltage |
| Input operation voltage (max) | 300 V |
| Input operation voltage (min) | 140 V |
| Output operation voltage (min) | 220 V |
| Output operation voltage (max) | 230 V |
| Waveform | Pure sine |
| Output voltage regulation | 5 |
| UPS topology | Double-conversion (Online) |

### Packaging data

| Feature | Value |
|---|---|
| Package weight | 3895 g |
| Package depth | 323 mm |
| Package height | 222 mm |
| Package width | 142 mm |
| Package type | Box |

## FAQ

### How much does the QOLTEC Monolith UPS Double-conversion 0.45 kVA cost, and is it available for purchase?

The price is 45.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 64 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on Tuesday at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All QOLTEC products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized QOLTEC service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: ac outlets quantity, usb 2.0 ports quantity, weight, output power, output power capacity, product colour, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

## Image

https://aio.lv/img/cache/product/4642719/65772523_large.webp