Dell D2421H - Page 18

18 │ About Your Monitor
Environmental Characteristics
Model number D2421H/D2721H/D2421DS
Temperature
• Operating
• Non-operating
0°C to 50°C (32°F to 122°F)
Storage: -20°C to 60°C (-4°F to 140°F)
Shipping: -20°C to 60°C (-4°F to 140°F)
Humidity
• Operating
• Non-operating
20 % to 90 % (non-condensing)
Storage: 5 % to 90 % (non-condensing)
Shipping: 5 % to 90 % (non-condensing)
Altitude
• Operating
• Non-operating
5,000 m (16,404 ft) max
12,191 m (40,000 ft) max
Model number D2421H D2721H D2421DS
Thermal dissipation 75.06 BTU/hour
(maximum)
68.24 BTU/hour
(typical)
95.53 BTU/hour
(maximum)
85.3 BTU/hour
(typical)
119.42 BTU/hour
(maximum)
102.36 BTU/hour
(typical)
Compliant standards
Model number D2421H/D2721H/D2421DS
RoHS Compliant yes
BFR/PVC free Monitor (excluding external cables) no
Power Management Modes
If you have VESA’s DPM compliance display card or software installed in your PC, the
monitor automatically reduces its power consumption when not in use. This is referred
to as Power Save Mode. If the computer detects input from keyboard, mouse, or other
input devices, the monitor automatically resumes functioning. The following table shows
the power consumption and signaling of this automatic power-saving feature:
D2421H
VESA Modes Horizontal
Sync
Vertical
Sync
Video Power
Indicator
Power Consumption
Normal operation Active Active Active BLUE 22 W (maximum)**
20 W (typical)