Instruction Manual
TROUBLESHOOTING
Check here before contacting customer service.
Issue Symptom Solution
Main unit
US Atomic 
Time signal is 
not received
Place unit by the window and 
keep it there overnight
Remote
sensor
Cannot locate 
remote sensor 
Cannot change 
the channel
Data does not 
match data on 
the main unit
Check batteries
Check location
Press and hold DOWN ( ? ) button 
on the main unit to search for the 
signal form the remote sensor
Press “RESET” after setting the 
channel
Initiate manual sensor search (Press 
and hold DOWN ( ? ) button on the 
main unit)
PRECAUTIONS
This product is engineered to give you years of satisfactory 
service if handled carefully. Here are a few precautions:
• Do not immerse the units in water.
• Do not clean the units with abrasive or corrosive materials. 
 They may scratch the plastic parts and corrode the electronic 
 circuits.
• Do not subject the product to excessive force, shock, dust, 
 temperature, or humidity, which may result in malfunctions, 
 shorter lifespan, damaged batteries, and damaged parts.
• Do not tamper with the units internal components. Doing so 
 will invalidate the warranty and may cause damage. These 
 units contain no user-serviceable parts.
• Use only fresh batteries. Do not mix new and old batteries.
• Read the user's manual thoroughly before operating the units.
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