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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.

  • Huion GT1902 €8.56
  • Shandong Yi Hang Electronic Technology Development K18G €2.85
  • Uperfect M156J09,M156C10,M156E13,M156T02,M156J10 €3.72
Model Huion GT1902 Shandong Yi Hang Electronic Technology Development K18G Uperfect M156J09,M156C10,M156E13,M156T02,M156J10
Running cost
Running cost (per year) €8.56 €2.85 €3.72
over 10 years €86 +€57 over 10 years €29 €37 +€9 over 10 years
kWh per year 30.2 10.1 13.1
kg CO₂e per year from electricity use 6.3 2.1 2.8
Specifications
Brand Huion Shandong Yi Hang Electronic Technology Development Uperfect
Model GT1902 K18G M156J09,M156C10,M156E13,M156T02,M156J10
Energy class E A A
Screen size 18″ (46.7 cm) 18″ (46.9 cm) 18″ (47 cm)
Power in on mode (SDR) 13.8 W 4.6 W 6 W
Standby 0.2 W 0.1 W 0.5 W
Networked standby 0 W – 0 W
Off mode 0 W 0.1 W 0 W
Resolution 3840 × 2160 3840 × 2160 3840 × 2160
Aspect ratio 16:9 16:9 16:9
Panel LED LCD LCD LCD
Refresh rate 60 Hz 60 Hz 60 Hz
Power supply Internal External External
Guaranteed support 3 years 3 years 1 year
Software updates 8 years 3 years 1 year
Spare parts available 8 years 3 years 1 year
On the market since August 11, 2023 February 19, 2025 July 24, 2026
EPREL registration number 1707620 2268096 2800067

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