If the clock behaves erratically, remove the battery for at least 10 seconds before reinserting to clear the internal memory.
Locate the switch on the back and move it to your region: P (Pacific), M (Mountain), C (Central), or E (Eastern). ch899 chouchin radio controlled clock instructions free
If the time is slightly off and you want to force a resynchronization: Press and hold the button for 3 seconds. If the clock behaves erratically, remove the battery
Place one fresh 1.5V AA alkaline battery into the compartment, matching the polarity (+/-). If the clock behaves erratically
The hands will return to the 12:00 position and start a fresh search for the atomic signal.
For more specific details, you can find a downloadable PDF of these steps on the School Fix Atomic Clock Instructions or the TLC Electrical Supplies datasheet .
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