La Crosse Technology WS-9121 - Manual (Page 38)

75
Opening and tampering with the unit may invalidate their
guarantee.
9 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
: 14.1ºF to +139.8ºF with 0.2ºF resolution
(-9.9 to +59.9 °C with 0.1°C resolution)
(“OF.L” displayed if outside this range)