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Model: 617-1485 www.lacrossetechnology.com/support Page | 1
Model: 617-1485
Instruction Manual
DC: 032615
ATOMIC ALARM CLOCK
Battery
Compartment
2 “AAA”
AC Power Jack
HX-0501500U
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Model: 617-1485 www.lacrossetechnology.com/support Page | 2
Get Started
Step 1: Insert 5 volt AC adapter into the wall then into the back of
the alarm clock.
Step 2: Insert 2 new AAA Alkaline batteries (not included) into the
alarm clock. Observe the correct polarity.
Restart: If there is no indoor temperature data after 60 seconds,
unplug the AC adapter and remove batteries from the alarm clock,
press any button 20 times. After 15 minutes, return to Step 1
above.
LCD Features
Adjust Backlight HI/LOW/OFF
For constant backlight use A/C adapter:
Press the HI/LOW/OFF button to adjust the backlight.
Battery power only:
Press the HI/LOW/OFF button and backlight will come on for
10 seconds when operating on battery power.
Backlight will not stay on with battery operation only.
Low Battery Icon
When the icon is displayed in below the moon phase,
replace batteries in the alarm clock.
Atomic Time Alarm Icon Moon Phase
Indoor
Temperature
+ Trend
indicators
Low Battery
Icon
WWVB
Tower
Indoor
Humidity
+ Trend
indicators
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Model: 617-1485 www.lacrossetechnology.com/support Page | 3
Set Time & Calendar
1. Hold the SET button to enter time set
mode.
2. Press the + or - buttons to adjust values.
3. Press the SET button to confirm adjustments and move to the
next item.
Setting order:
1. WWVB time signal (On/Off)
2. Time Zone - 7 time zones
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 button to exit, or wait 20 seconds without pressing
buttons to return to the normal time display.
Fahrenheit/Celsius
Press the °F/°C button to select temperature
readings in Fahrenheit or Celsius.
USB Charging Port
NOTE: This is a power-output charging port. It does not provide
power to the alarm clock.
Charge a smart phone, camera or other devices when the alarm
clock is plugged into a power outlet with the included 5V AC
adapter.
Connect your external device’s USB
charging cable (not included) to the USB
charging port.
Charging times will vary.
USB Power Output: 1A maximum current.
Charge 1A devices or devices that are self-
regulating.