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Extech CTH10A Radio-Controlled Wall Clock Hygro-Thermometer with Calendar

  • mfr: CTH10A-EXTCH
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  • Free standard shipping

    *Orders placed before 3 PM EST Mon - Thur will ship the same day. Orders placed beyond these hours will be shipped the next business day. Exclusions apply. See shipping policy

  • Free Local Pickup

    Please call for store stock availability.

    Requests made before 2:30 PM EST can be available for next-day pickup. Learn more

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Product highlights

  • Oversized 109-millimeter display
  • Easily viewable from long distances
  • Automatic adjustment of date and time
  • Displays temperature and humidity
  • Receives Time Code from NIST radio station
  • Programmable alarm clock
  • Equipped with snooze feature
  • Can be mounted on wall or desk

Extech CTH10A Radio-Controlled Wall Clock Hygro-Thermometer with Calendar

The Extech CTH10A Radio-Controlled Wall Clock Hygro-Thermometer with Calendar is an attractive wall clock that features an oversized 109-millimeter digit time display that can be easily viewed from a longer distance than regular-sized clocks. It receives Time Code from NIST Radio Station WWVB and it automatically adjusts year, date, day, hour, minute, second, and Daylight Savings Time. It also measures Temperature and Relative Humidity. It is perfect for desktop or wall-mount displays. This clock meter also features an automatic adjustment for daylight savings time, a programmable alarm clock with a snooze feature, and a built-in stand for desktop or wall mount. It comes complete with a built-in stand and three C-size batteries.

Easy to Read

The clock has a large digital display with time, date, temperature, and relative humidity.


It stays accurate throughout the year. The link to the NIST radio station ensures accuracy, even adjusting for daylight saving time.

Set up Anywhere

Mount it on a wall or use the built-in stand to set it on a desk or shelf.


Configuration Core
Pack Size Single Pack
Style Rectangle
Color Silver


Customer Questions
No Questions


Returns are incredibly simple. Please log into your account, find your item you wish to return and follow the prompts to make a return. If you do not have an account, click here to find your order and make a return.
You will receive a full refund when you return an item in its original manufacturer’s packaging, undamaged and unmarked. If the item you are returning is priced at less than $35, you will be charged a 15% restocking fee. Please note you will not be refunded any shipping charges. 
You have 30 days to make a return. During the holiday season, from November 1 to December 31, we extend the return window to 60 days. 
If your order has been noticeably damaged in transit, we strongly recommend that you refuse delivery and notify us immediately. Claims for missing items or items damaged in transit must be made within 48 hours of delivery. If there is carrier damage, please contact [email protected] with your order number and a description of the damage. 
Oh no! Please contact our customer service team so we can resolve the issue immediately. You can call us on 1.800.221.0828, email us at [email protected], or send us a message here.  
We do not currently offer exchanges. Please return the item you purchased within 30 days and order what you’d like instead. 
If you ordered a kit, you must return all components and accessories to receive a full refund. 
If you ordered a product that included a free item, you must include the free item with your return. If not, your return will not be accepted and you will not receive a full refund. 
We currently only offer camera repairs at our Brooklyn store. The item must be dropped off and collected in person as we do not accept shipped items for repair. For more information, please call our Brooklyn store on 1.718.431.7900. 
Most items can be returned within 30 days for a full refund. Click here to read our full return policy. 

Shipping and Returns

Same Day Shipping

All orders placed by 4PM( EST), Monday through Thursday, and by 11AM (EST) on Friday, are shipped same day. Orders placed outside these times will ship the next business day. We do not ship internationally or to Puerto Rico, Guam and other US territories at this time. For more details click here.

Free Two-Day Shipping

We offer free expedited shipping on thousands of items within the continental USA (this does not include Alaska and Hawaii).

Flexible, Easy Returns

If you're not happy with your purchase for any reason, our flexible 30-day free return policy makes it easy to get a full refund. Click here to view our return policy.

Ratings and reviews

Extech CTH10A Radio-Controlled Wall Clock Hygro-Thermometer with Calendar

Extech CTH10A Radio-Controlled Wall Clock Hygro-Thermometer with Calendar SKU: CTH10A-EXTCH

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