TFA Weather Boy Instruction Manual page 44

SET key

Press and hold the key to enter manual setting modes: time zone, manual time, calendar,
time reception ON/OFF, 12/24 hour display and temperature unit °C/°F setting
+ key

To make adjustment for various settings
IN key

Press to display the MIN and MAX indoor temperature records

Press and hold to reset the indoor MIN/MAX temperature records
OUT key

Press to display the MIN and MAX outdoor temperature records

Press and hold to reset the outdoor MIN/MAX temperature records
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