La Crosse Technology T83721, Faqs

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La Crosse Technology, Ltd. www.lacrossetechnology.com/support Page 6
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Sometimes a simple relocation of the outdoor sensor or the projection alarm will correct the
interference.
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Windows can reflect the radio signal.
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Metal will absorb the RF (radio frequency) signal.
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Stucco has a metal mesh that absorbs signal.
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Avoid transmitting antennas: (ham radios, emergency dispatch centers, airports, military bases, etc.)
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Electrical wires (utilities, cable, etc.)
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Vegetation is full of moisture and reduces signal.
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It is difficult for RF (radio frequency) signal to travel through a hill.
Projection Alarm
How tall are the time numbers?
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The time numbers are 0.75 inches tall.
Power Requirements
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This projection alarm is powered by a 5 volt AC power adapter
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Alternatively, optional 3-AAA alkaline batteries may be used.
12-Hour or 24-Hour time format
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Time can display in 12-hour (am, pm) or 24-hour format.
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Default is 12-hour time.
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Use the Program Menu to switch time formats.
Fahrenheit/Celsius
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Press and release the SET/°F/°C button to select temperature readings in Fahrenheit or Celsius.
Dashes, HH.H, LL.L or stuck Indoor Temperature
Explanation: These symbols are error messages indication the indoor sensor is outside of its readable
range. For indoor readings, this is generally a power related issue.
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Batteries may be overpowered or underpowered. Remove batteries from the projection alarm.
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Press any button 20 times. Leave the projection alarm unpowered for 1-2 hours.
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Install fresh Alkaline batteries with correct polarity.
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If the indoor temperature is still shows dashes, HH.H or LL.L, the projection alarm may need
replacement.
Inaccurate Indoor Temperature Reading
Explanation: When the indoor temperature is inaccurate, it is often due to the location of the display or
overpowered/under powered batteries. You can test the accuracy at you home.
Side-by-side test:
Bring the outdoor sensor in the house and place it next to the projection alarm for 2
hours.
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Compare indoor and outdoor temperature. The temperature should be within 4 degrees to be within
tolerance.
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Look for heat sources such as sunlight, door or window frames or reflected heat or cold near the
projection alarm.
Check batteries .
Time is off by hours
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Check to see if the WWVB Tower icon appears on the Atomic Projection Alarm. If not, the Atomic
Projection Alarm has not received a WWVB time signal in the past 24-hours.