LG 20MK400H
- Monitors
- 19″
- HD
- LCD / LED
Uses 6% less energy than the average for 19-inch monitors on Wattabill (144 models).
Running cost at a glance
- €7.23 per year
- €72 over 10 years
- 25 kWh per year
- 5.2 kg CO₂e per year from electricity use
Your country and usage
- Electricity at €0.2896 per kWh (household price with taxes, Eurostat 2025-S2).
- 210 g CO₂e per kWh generated in 2023 (European Environment Agency). Counts use only, not manufacturing.
We assume prices stay the same over the years.
Electricity prices in all EU countries
Same size and resolution, cheaper to run
Models on the market with the same screen size and resolution as the LG 20MK400H that use at least 5% less energy.
About this model
Text from the manufacturer, via Icecat.
Protect Eyes with Reader Mode
Reducing blue light to help lessen eye fatigue,
Reader Mode provides optimal condition for reading. With easy joystick control,
you can more comfortably read your monitor screen.
Offers Stable Image
Reducing the flicker level to almost zero, Flicker Safe helps you protect your eyes from exhausting flickers.
React Faster to The Action
Dynamic Action Sync mode allows you to instantly react to your opponents and attack them without any display lag. It synchronizes your senses with real-time scenes in fast-paced games by minimizing input lag.
Read more
Enemies Have Nowhere to Hide
Black Stabilizer gives you full visual clarity, even in games where you spend a lot of time in the dark. It synchronizes and brightens the darkest areas, so that you can find enemies hiding in the shadows and shoot first.
Easier User Interface
OnScreen Control is simple and intuitive. You can customize your display options with a few simple clicks.
Convenient and Flexible
Mount the monitor to suit your work or entertainment set up.
Specifications
| Brand | LG |
|---|---|
| Model | 20MK400H |
| Energy class | D |
| Screen size | 19″ (49.4 cm) |
| Power in on mode (SDR) | 11.4 W |
| Standby | 0.5 W |
| Off mode | 0.3 W |
| Resolution | 1366 × 768 |
| Aspect ratio | 16:9 |
| Panel | LED LCD |
| Refresh rate | 60 Hz |
| Power supply | External |
| Guaranteed support | 8 years |
| Software updates | 8 years |
| Spare parts available | 8 years |
| On the market since | February 26, 2021 |
| EPREL registration number | 356179 |
Source: EPREL, European Commission. Data updated October 13, 2026.
Product description and images: Icecat (Open Icecat), provided as is, without warranty.