La Crosse Technology Intelligent Weather Station WS-9020U 915MHZ - Manual (Page 32)

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CARE AND MAINTENANCE
• Extreme temperatures, vibration and shock should be avoided as
these may cause damage to the units and give inaccurate forecasts
and readings.
• When cleaning the display and casings, use a soft damp cloth only.
Do not use solvents or scouring agents as they may mark the LCD
and casings.
• Do not submerge the units in water.
• Immediately remove all low powered batteries to avoid leakage and
damage. Replace only with new batteries of the recommended type.
• Do make any repair attempts to the units. Return it to their original
point of purchase for repair by a qualified engineer. Opening and
tampering with the units may invalidate their guarantee.
• Do not expose the units to extreme and sudden temperature
changes, this may lead to rapid changes in forecasts and readings
and thereby reduce their accuracy.
SPECIFICATIONS
Temperature measuring range:
Indoor : +40°F to +139.8°F with Accuracy +/- 0.2°F resolution
-40ºC to +59.9ºC with Accuracy +/- 0.1ºC resolution
(“OF.L” displayed if outside this range)
Outdoor : -39.8°F to +139.8°F with Accuracy +/- 0.2°F resolution
-39.9ºC to +59.9ºC with Accuracy +/- 0.1ºC resolution
(“OF.L” displayed if outside this range)
Relative humidity measuring range:
Indoor
: 1% to 99% with 1% resolution
(“- -” displayed when value < 1%; "99%"
displayed if value
≥ 99%)
Outdoor : 1% to 99% with 1% resolution
(“1%” displayed when value ≤ 1%; "99%" is
played if value ≥ 99%)
Indoor temperature checking interval : every 20 seconds
Indoor humidity checking interval
: every 20 seconds
Outdoor temperature reception : every 4 seconds