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Knowledge Base, Manuals & Downloads

75331T Clock

75331T AcuRite Wall Clock

Manual Timex Atomic Clock Instruction Manual 75331T [PDF]
Replacement Parts Tower sensor: 606TX
Icon Definitions Click here
More Information
Atomic Technology
Specifications Time Zones: HAST, AKST, EST, PST, MST, CST, EST, AST
Indoor Temperature Range: 32º to 122º F, 0º C to 50º C
Outdoor Temperature Range: -40º to 158º F, -40º C to 70º C
Temperature Accuracy: +/- 2°
Wireless Range:
165' (50m)
Data Reporting: 30 second updates
Wireless Frequency: 433 MHz
: 8 AA alkaline batteries

Problem Possible Solution

Time changes or is off
by an hour or more

• Check to make sure you have selected the correct time zone. 
• Make sure you are using good quality, alkaline batteries. DO NOT use rechargeable or heavy duty batteries.
• This unit it atomic and should automatically correct itself with the date and time once it picks up the atomic signal. Try moving the unit to a window facing Colorado overnight (signal is better at night) so it can gain a strong connection. If it continues to change, you may want to relocate the unit to a different location in your home.

No outdoor

1. Bring both the sensor and display unit indoors and remove at least one battery from each.
2. Reinstall the battery in the outdoor sensor.
3. Reinstall the battery in the display unit.
4. Let the units sit within a couple feet of each other for about 20 minutes to gain a strong connection.

No outdoor 

If the wireless signal indicator shows no bars:
• Relocate the display unit and/or the outdoor sensor. The units must be within 165 ft (50 m) of each other.
• Make sure both units are placed at least 3 feet (.9 m) away from electronics that may interfere with the wireless communication (such as TVs, microwaves, computers, etc).  
• Use standard alkaline batteries (or lithium batteries in sensor when temperature is below -4ºF/-20ºC). Do not use heavy duty or rechargeable batteries. NOTE: It may take up to 20 minutes for display unit and sensor to synchronize after batteries are replaced.

Make sure both the display unit and sensor are placed out of direct sunlight and away from any heat sources or vents.

Display screen
not working
• Check that the batteries are installed correctly. Batteries may need to be replaced.
• Press and release the Reset button located just above the batteries inside the battery compartment.
Backlight doesn't
turn on
The Indiglo® backlight will only turn if it is in a very dark room. Try taking the clock into a closet or bathroom and see if the light will come on.


Questions? We're here to help.

Phone +1 262 249-3259  |  My AcuRite Technical Support +1 262 203-5667 |  Community forum: http://support.acurite.com

Models: 75331t




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