La Crosse Technology WIRELESS 433 MHZ WS-9035TWC - Manual (Page 17)

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5) Place the remote temperature/humidity sensor and indoor weather station in position so the straight-line signal is not
passing through more than two or three walls.
Problem: Temperatures do not match if units are placed next to each other.
Solution: Each temperature/humidity sensor is manufactured to be accurate to within 2 degree plus or minus and under normal
conditions, so two sensors could be as much as 4 degrees different. However, the difference can be exaggerated further
because the sensors are designed for different working environments. The indoor temperature sensor is less responsive to
ambient air currents because of the shielding effect of the display's case. In addition, the case can act as a heat sink to
absorb and store heat from external sources (i.e. handling of the case or radiant heat). Also, the much greater range of the
remote temperature/humidity sensor requires a different calibration curve than the indoor range. Error is usually greater at
the extreme ends of a range, making it harder to compare different ranges with different curves. Under non-laboratory
conditions, it is difficult to compensate for the above factors and obtain an accurate comparison.
MAINTENANCE AND CARE INSTRUCTIONS
• Extreme temperatures, vibration, and shock should be avoided to prevent damage to the units.
• Clean displays and units with a soft, damp cloth. Do not use solvents or scouring agents; they may mark the displays and
casings.
• Do not submerge in water.
• Immediately remove all low powered batteries to avoid leakage and damage.
• Opening the casings invalidates the warranty. Do not try to repair the unit. Contact La Crosse Technology for repairs.