(if IN/OUT is set to IN) or OUT and the outdoor temperature appear (if IN/ OUT is set to OUT).
3. Replace the cover.
When the display characters dim or dis- appear or the thermometer stops operat- ing properly, replace the batteries.
Warning: Dispose of old batteries promptly and properly. Do not burn or bury them.
Caution: If you do not plan to use the thermometer for a month or more, re- move the batteries. Batteries can leak chemicals that can destroy electronic parts.