The following reset steps can be performed to correct issues of the sensor not connecting to the display. Symptoms of the sensor not connecting to the display could include:

• No outdoor temperature (showing dashes).
• Outdoor temperature does not change.
• No wind speed.
• Inaccurate wind speed. 
• The outdoor temperature is -40 degrees. 
• The outdoor humidity reads 1%.

You would want to ensure the following first:

1. Verify that the A-B-C switch in the battery compartments of both the display and sensor are set to the same letter. You may choose A, B, or C; but both units must match to sync up.
2. Relocate the display unit and/or the AcuRite Notos® (3-in-1) sensor. Under optimal conditions, the units can be located up to 330 ft (100 m) of each other.                                                                                                           
3. Units should be placed at least 3 feet (.9 m) away from electronics that may interfere with wireless communication (such as TVs, microwaves, computers, etc).
4. Use standard alkaline batteries (or lithium batteries in the sensor when the temperature is below -4ºF/-20ºC). We do not recommend using heavy-duty or rechargeable batteries. NOTE: It may take approximately 5 minutes for the display unit and sensor to synchronize after batteries are replaced.

Hard Reset:

1. Bring both the sensor and display unit together and remove batteries from the outdoor sensor. Make sure that the Wireless Reception Indicator on the display drops to zero bars to ensure that your display was connected to the correct sensor. (If your wireless reception indicator already indicates zero bars, please proceed to Step #2.)
   NOTE: If your display unit continues to show a strong connection, there is another sensor in your area that your display is connecting to (either a neighbor's or from another of your AcuRite units). If you have multiple sensors, make sure to use a different ABC channel on each. 
2. Change the A-B-C switch on both units to a new, matching channel then press and hold the reset button on the display for 20 seconds if applicable.
3. Reinstall the batteries in the outdoor sensor.
4. Reinstall batteries and/or power cord into the display unit then immediately press and hold the reset button again for 20 seconds if applicable.
5. Let the units sit within a couple of feet of each other for approximately 5 minutes or until you see a solid sensor signal.

If you still experience the issue, move forward with the following applicable troubleshooting below:

AcuRite Notos® (3-in-1) Inaccurate Temperature or Humidity

AcuRite Notos® (3-in-1) Inaccurate Wind Readings

If you are still experiencing concerns, please contact our U.S. based support staff by Submitting a Request or by chatting with our Live Agents. If you already have an open ticket with a support agent, please reply to the last email sent.