1st make sure your batteries are still working on the outside receiver. Then go inside and take the batteries out of your inside receiver (the clock). Put the new batteries in the clock and wait for the outside temperature to set. DO NOT SET THE TIME or anything else until the signal is received from the outside temp. If you get frustrated, take the outside transmitter inside and when it blinks the red light that is when the signal is sent, so wait for that.
Hopefully this works for you.
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If your Sharp atomic clock SPC373 is unable to display the outside temperature, there may be an issue with the sensor or the connection between the sensor and the clock. Ensure that the sensor is placed in an area where it can accurately read the outdoor temperature and that it is properly synced with the clock. If the issue persists, try resetting the sensor and re-syncing it with the clock according to the manufacturer's instructions.
The Sharp Atomic Clock SPC900 does not display the outdoor temperature. It only displays the time and date received from the atomic signal.
how do you change the day of the week? model spc1003
Start with outside transmitter. Place batteries in proper polarity. Paper clip in hand reset the small button. Set channel #1 may be default. close unit battery cover. Place close to inside unit even though outside. Within 50 meters. Inside unit set channel #1 on the back marked channels. Now if you have sync. button push it once. Temp should now show up with in seconds. -------tip---outside transmitter should be line of sight. and close to same level.
To change your sharp atomic clock to Daylight Saving Time, you can typically adjust the time manually by pushing the appropriate buttons on the clock. Refer to the user manual for specific instructions on how to change the time settings. If your atomic clock is set to automatically receive time updates, it should adjust to Daylight Saving Time automatically.
To switch the Sharp atomic clock SPC900 from 24-hour to 12-hour format, you typically need to access the clock's settings menu. Look for an option labeled "Time Format" or something similar, and then select 12-hour format. Refer to the user manual for specific instructions on accessing and changing this setting on your particular model.