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Model T83621 www.lacrossetechnology.com/support Page | 1
Quick Setup Guide
Atomic Projectio n A larm
Model: T83721
Rotation
(Front and
PORT
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Compartment
3 “AAA”
Observe the correct
polarity before inserting
the batteries
GET STARTED
Step 1: Insert the included 5-volt AC power adapter into projection
alarm and then into wall outlet.
Step 2: Insert 3 new “AAA” batteries (not included) into the projection
alarm. Observe the correct polarity.
Step 3: Insert 2 new “AA” batteries (not included) into the TX141-B
transmitter. Observe the correct polarity.
NOTE: If the outdoor temperature is not displayed after 3 minut es, unplug the AC
adapter and remove batteries from the projection alarm & transmitter for 15 minutes.
Return to Step 1 above.
SET TIME AND DATE
1. Hold SET/°F/°C to enter time set mode.
2. Use +/TEMP or -/TIME buttons to adjust values.
3. Press SET/°F/°C to confirm adjustments and move to the
Time and Date setting order:
1. WWVB (ON/OFF)
2. Time Zone
3. DST Daylight Saving Time (ON/OFF)
4. 12/24 Hour Time Format
5. Hour
6. Minutes
7. Year
8. Month
9. Date
Press the SET/°F/°C to exit, or wait 20 seconds without pressing
buttons to return to the normal time display.
Model T83621 www.lacrossetechnology.com/support Page | 2
Press and hold for fast adjustment.
next item.
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FAHRENHEIT/CELSIUS
Press the SET/°F/°C to select Fahrenheit or Celsius temperature
display.
SET TIME ALARM
1. Hold ALARM to enter alarm time set mode.
2. Use +/TEMP or -/TIME buttons to adjust values.
3. Press ALARM to confirm adjustments and move to the next
item.
Time and Date setting order:
1. HOURS
2. MINUTES
ACTIVATE / DEACTIVATE TIME ALARM
• Press ALARM once to view alarm time.
• Press ALARM again to activate the alarm.
Bell icon appears.
• Press ALARM again to deactivate the alarm.
The bell icon disappears.
Bell Icon
SNOOZE (Silences alarm temporaril y)
• Press the SNOOZE/LIGHT to silence alarm for 10 minutes.
• Zz will show.
• When in snooze mode, press ALARM to stop alarm for one day.
Note: The alarm is crescendo sound. The alarm will sound for 2 minutes and then shut
off completely.
MOON PHASE
The segments that are highlighted will portray the part of the moon
that is lit. For instance, the moon will be blank during a new moon and
dark during a full moon. This is how this product is designed to best
view the on the display, what you will see in the sky. This cannot be
changed.
Model T83621 www.lacrossetechnology.com/support Page | 3