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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.

Electricity prices in all EU countries

Yearly running cost

Bars in proportion to the energy each model uses.

  • Acer B277K LBbmiiprzx €12.40
  • Guangzhou changhong audio-visual electronic products M-27LFK4P60 €4.34
  • Shenzhen dusun UP27001,UP27002,UP27003,UP27004,UP27005 €4.96
Model Acer B277K LBbmiiprzx Guangzhou changhong audio-visual electronic products M-27LFK4P60 Shenzhen dusun UP27001,UP27002,UP27003,UP27004,UP27005
Running cost
Running cost (per year) €12.40 €4.34 €4.96
over 10 years €124 +€81 over 10 years €43 €50 +€6 over 10 years
kWh per year 43.8 15.3 17.5
kg CO₂e per year from electricity use 9.2 3.2 3.7
Specifications
Brand Acer Guangzhou changhong audio-visual electronic products Shenzhen dusun
Model B277K LBbmiiprzx M-27LFK4P60 UP27001,UP27002,UP27003,UP27004,UP27005
Energy class E C A
Screen size 27″ (68.6 cm) 27″ (70 cm) 27″ (68.6 cm)
Power in on mode (SDR) 20 W 7 W 8 W
Energy class (HDR) G – –
Power in on mode (HDR) 45 W – –
Standby 0.5 W 0.3 W 0.3 W
Off mode 0.3 W 0 W 0.1 W
Resolution 3840 × 2160 3840 × 2160 3840 × 2160
Aspect ratio 16:9 16:9 16:9
Panel LED LCD LED LCD LCD
Refresh rate 60 Hz 60 Hz 144 Hz
Power supply Internal External External
Guaranteed support 7 years 1 year 1 year
Software updates 8 years 1 year 1 year
Spare parts available 7 years 1 year 1 year
On the market since July 31, 2025 October 25, 2024 December 18, 2025
EPREL registration number 2446410 2181008 2577146
Networked standby – 0 W 0 W

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