HP Deskjet 3810/3820 HP Deskjet 3820 Series printers - (English) Windows User' - Page 83

Sound power level, LWAd: 5.7 Bels A [57 dB A]

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operating environment Maximum operating conditions: Temperature: 41 to 104 degrees F, 5 to 40 degrees C Humidity: 15 to 80 percent RH non-condensing Recommended operating conditions for best print quality: Temperature: 59 to 95 degrees F or 15 to 35 degrees C Humidity: 20 to 80 percent RH non-condensing Storage conditions: Temperature: -40 to 158 degrees F, -40 to 70 degrees C power consumption 2 watts maximum when off 4 watts average non-printing 25 watts average when printing power requirements Input Voltage: 100 to 240 Vac (± 10%) Input Frequency: 50-60 Hz (± 3 Hz) Accommodates the worldwide range of AC line voltages and frequencies. declared noise emissions in accordance with ISO 9296 Best Mode: Sound power level, LWAd: 5.7 Bels (A) [57 dB (A)] Sound pressure level, LpAm (bystander positions): 45 dB (A) Normal Mode: Sound power level, LWAd: 6.0 Bels (A) [60 dB (A)] Sound pressure level, LpAm (bystander positions): 47 dB (A)

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Temperature: 41 to 104 degrees F, 5 to 40 degrees C
Humidity: 15 to 80 percent RH non-condensing
Recommended operating conditions for best print quality:
Temperature: 59 to 95 degrees F or 15 to 35 degrees C
Humidity: 20 to 80 percent RH non-condensing
Storage conditions:
Temperature: -40 to 158 degrees F, -40 to 70 degrees C
power consumption
2 watts maximum when off
4 watts average non-printing
25 watts average when printing
power requirements
Input Voltage: 100 to 240 Vac (± 10%)
Input Frequency: 50–60 Hz (± 3 Hz)
Accommodates the worldwide range of AC line voltages and frequencies.
declared noise emissions in accordance with ISO 9296
Best Mode:
Sound power level, LWAd: 5.7 Bels (A) [57 dB (A)]
Sound pressure level, LpAm (bystander positions): 45 dB (A)
Normal Mode:
Sound power level, LWAd: 6.0 Bels (A) [60 dB (A)]
Sound pressure level, LpAm (bystander positions): 47 dB (A)
operating environment
Maximum operating conditions: