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3 monitors side by side.

6 h a day
  • 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.

Yearly running cost

Bars in proportion to the energy each model uses.

  • Shenzhen E-Tech Digital S1 €3.72
  • ASUS MB14AC €3.10
  • Mt-Viki MT-LMP4 €1.86
Model Shenzhen E-Tech Digital S1 ASUS MB14AC Mt-Viki MT-LMP4
Running cost
Running cost (per year) €3.72 €3.10 €1.86
over 10 years €37 +€19 over 10 years €31 +€12 over 10 years €19
kWh per year 13.1 11 6.6
kg CO₂e per year from electricity use 2.8 2.3 1.4
Specifications
Brand Shenzhen E-Tech Digital ASUS Mt-Viki
Model S1 MB14AC MT-LMP4
Energy class C B A
Screen size 14″ (36 cm) 14″ (35.6 cm) 14″ (35.5 cm)
Power in on mode (SDR) 6 W 5 W 3 W
Standby 0.2 W 0.3 W 0.2 W
Off mode 0.2 W 0.3 W 0.1 W
Resolution 1920 × 1080 1920 × 1080 1920 × 1080
Aspect ratio 16:9 16:9 16:9
Panel LED LCD LCD LED LCD
Refresh rate 60 Hz 60 Hz 60 Hz
Power supply Internal Internal Internal
On the market since February 26, 2025 May 19, 2020 May 27, 2026
EPREL registration number 2273995 419756 2741032
Guaranteed support – 7 years 3 years
Software updates – 8 years 5 years
Spare parts available – 7 years 3 years
Energy class (HDR) – – A
Power in on mode (HDR) – – 3 W
Networked standby – – 0 W

Rows where the models differ are highlighted.