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Radio-Controlled Wall Clock Hygro-Thermometer with Calendar

Extech CTH10A

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The CTH10A is an attractive wall clock features an oversized 109 mm (4.3 in) digit time display that can be easily view 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. In addition, it also measures Temperature and Relative Humidity! Perfect for desktop or wall mount display. This clock meter also features automatic adjust for daylight savings time (DST), programmable alarm clock with snooze feature, and a built-in stand for desktop or wall-mount. Complete with built-in stand and three C size batteries.

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  • Easy to read

    Large digital display with time, date, temperature, and relative humidity.

  • Stays accurate throughout the year

    Link to NIST radio station ensures accuracy, even adjusting for daylight saving time.

  • Set up anywhere

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

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General Specifications
Relative Humidity
20 to 99%
Relative Humidity Basic Accuracy
Temperature (Air)
0°C to 50°C (32°F to 122°F)
Temperature (Air) Basic Accuracy
±1 °C/2°F
Additional Details
425.4 × 292.1 × 31.75 mm (16.75 × 11.5 × 1.25 in)
3 × C (1.5 V) batteries
2 years
1.2 kg (2.75 lbs)
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Export Restrictions

Export Restrictions

The information contained in this page pertains to products that may be subject to the International Traffic in Arms Regulations (ITAR) (22 C.F.R. Sections 120-130) or the Export Administration Regulations (EAR) (15 C.F.R. Sections 730-774) depending upon specifications for the final product; jurisdiction and classification will be provided upon request.

Extech CTH10A