TFA WIRELESS 433 MHz TEMPERATURE STATION Instruction Manual page 36

CLEARING ALL DATA AND SETTINGS OF THE TEMPERATURE STATION FROM THE
PERMANENT MEMORY (FACTORY RESET)
The factory reset needs to be launched if malfunction on the temperature station occurs.
To reset the temperature station:
1. Ensure that the unit is in normal display, not displaying max, min, or history. And the unit is not
making any DCF or HF reception.
2. Press the OK, Plus, Minus and Mode key and hold for 3 seconds in following orders. The OK key
must be pressed and hold first, then the other three key must be pressed and hold also within 1s.
Then hold the four keys for 3 seconds until you see running digits at bottom right area of LCD.
Note: If the reset is not successfully initiated, user shall try from above step 1. again
Press and hold OK key first
Immediately press these
3 keys at the same time.
Then hold the 4 keys
together for about 3
seconds.
3. The running digits will be displayed for about 6 minutes, followed by the full segment display. User
is then required to remove and re-insert batteries to complete the restart the unit.
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