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4 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.
  • Cepter

    C21PULSE2
    E 21″Full HDLCD / LED

    €9.37 per year

    +€3.35 a year

  • Cheapest to run

    Zeuslap

    Z21Lite
    C 21″Full HDLCD / LED100 Hz

    €6.02 per year

  • Planar

    PVE22F
    D 21″Full HDLCD / LED120 Hz

    €7.57 per year

    +€1.55 a year

  • Inovu

    T215
    D 21″Full HDLCD / LED100 Hz

    €7.75 per year

    +€1.74 a year

Yearly running cost

Bars in proportion to the energy each model uses.

  • Cepter C21PULSE2 €9.37
  • Zeuslap Z21Lite €6.02
  • Planar PVE22F €7.57
  • Inovu T215 €7.75
Model Cepter C21PULSE2 Zeuslap Z21Lite Planar PVE22F Inovu T215
Running cost
Running cost (per year) €9.37 €6.02 €7.57 €7.75
over 10 years €94 +€33 over 10 years €60 €76 +€16 over 10 years €78 +€17 over 10 years
kWh per year 33.1 21.2 26.7 27.4
kg CO₂e per year from electricity use 6.9 4.5 5.6 5.7
Specifications
Brand Cepter Zeuslap Planar Inovu
Model C21PULSE2 Z21Lite PVE22F T215
Energy class E C D D
Screen size 21″ (54.6 cm) 21″ (54.6 cm) 21″ (54.5 cm) 21″ (54.5 cm)
Power in on mode (SDR) 15.1 W 9.7 W 12.2 W 12.5 W
Standby 0.3 W 0.4 W 0.3 W 0.1 W
Networked standby 0.3 W 0 W – –
Off mode 0.1 W 0.3 W 0.3 W 0.1 W
Resolution 1920 × 1080 1920 × 1080 1920 × 1080 1920 × 1080
Aspect ratio 16:9 16:9 16:9 16:9
Panel LCD LCD LCD LED LCD
Refresh rate 75 Hz 100 Hz 120 Hz 100 Hz
Power supply External External Internal External
On the market since June 14, 2023 April 14, 2026 September 1, 2026 July 1, 2025
EPREL registration number 1551709 2692426 2817043 2337261
Guaranteed support – 1 year 10 years 1 year
Software updates – 1 year 10 years 2 years
Spare parts available – 1 year 10 years 1 year

Rows where the models differ are highlighted.