Compare models
2 monitors side by side.
- Electricity at €0.2832 per kWh (household price with taxes, Eurostat 2026-S1).
- 210 g CO₂e per kWh generated in 2023 (European Environment Agency). Counts use only, not manufacturing.
Electricity prices in all EU countries
- Cheapest to run
- Add a model Use the Compare buttons on any of the monitors.
Yearly running cost
Bars in proportion to the energy each model uses.
- Renkforce 3437388 €11.10
- Zeuslap Z21Lite €6.02
| Model | Renkforce 3437388 | Zeuslap Z21Lite |
|---|---|---|
| Running cost | ||
| Running cost (per year) | €11.10 | €6.02 |
| over 10 years | €111 +€51 over 10 years | €60 |
| kWh per year | 39.2 | 21.2 |
| kg CO₂e per year from electricity use | 8.2 | 4.5 |
| Specifications | ||
| Brand | Renkforce | Zeuslap |
| Model | 3437388 | Z21Lite |
| Energy class | E | C |
| Screen size | 21″ (54.6 cm) | 21″ (54.6 cm) |
| Power in on mode (SDR) | 17.9 W | 9.7 W |
| Standby | 0.5 W | 0.4 W |
| Networked standby | 0 W | 0 W |
| Off mode | 0 W | 0.3 W |
| Resolution | 1920 × 1080 | 1920 × 1080 |
| Aspect ratio | 16:9 | 16:9 |
| Panel | LED | LCD |
| Refresh rate | 75 Hz | 100 Hz |
| Power supply | External | External |
| On the market since | March 31, 2026 | April 14, 2026 |
| EPREL registration number | 2569205 | 2692426 |
| Guaranteed support | – | 1 year |
| Software updates | – | 1 year |
| Spare parts available | – | 1 year |
Rows where the models differ are highlighted.