This is a medium-size, completely accurate digital clock with calendar and indoor/outdoor temperature display. The Atomix 75320 Worthington Atomic Clock is right at home hanging on a wall or resting on a table or a shelf. This radio controlled clock features a large display, especially those for time and calendar information. The time digits are almost 2 inches tall and very bold. The month, date, and year are 3/4 inch tall. Indoor and outdoor temperatures are 1/2 inch (except for tenths of a degree and C or F, which are smaller). A remote sensor/transmitter that reports the outdoor temperature to the clock for display is included.

 

You'll appreciate the both the absolute accuracy and the useful features of the 75320 Worthington clock. Because this clock is atomic, it sets itself automatically and adjusts automatically twice a year for Daylight Saving Time (DST). If you live in a location that does not observe DST (Arizona and parts of Indiana), you can easily disable the DST time change function. Also, you can disable automatic setting of time and date and set the clock manually if you wish (for example, if you take the clock out of WWVB time signal range). The time can be displayed in 12-hour or 24-hour mode. Calendar information is pre-programmed from 1 January 2000 through 31 December 2099. Month, date, and year are displayed digitally.

 

Successful reception of the time-synchronization radio signal from Colorado is indicated by a radio tower and waves icon just above seconds in the upper section of the display. After synchronization occurs, you can select your continental U.S. time zone (EST, CST, MST, or PST) by means of a switch on the back of the clock.

 

The indoor and outdoor temperatures can be displayed in either F or C, and both the temperature unit and the 12-/24-hour time mode can be changed at any time during normal operation simply by pressing buttons on the back of the clock. You don't have to reinitiate clock setup to do this. Also, if you live in an area that does not observe Daylight Saving Time (Arizona and parts of Indiana), you can simply set a switch on the back of the clock to disable automatic DST changes in the spring and fall.

 

The Atomix Worthington clock uses the Atomix 75321RS Wireless Remote Temperature Sensor. One 75321RS is included with the clock, and the clock works with up to three. Additional sensors are sold separately. The 75321RS is a non-displaying remote with a fold-out table stand that doubles as a wall-mounting bracket. You'll want to mount the 75321RS in a location where direct precipitation cannot fall on the remote. Although the remote is splash-resistant, it is not waterproof.

 

With the Worthington clock, you install batteries in the clock first and then in the remote. You then press the Tx (transmit) button on the remote. When reception occurs, the clock logs the remote in as Channel 1. Channels 2 and 3 register in the same way if additional sensors are purchased and used. The remote sensors can transmit up to 100 feet (30 meters) without outside interference, i.e., in an open area.

 

The clock requires three AA (1.5V) alkaline batteries for powering, and the remote uses two AAA (1.5V) alkaline batteries. The batteries are not included and must be obtained separately. Now that AAA lithium batteries are available, you may want to try them in the remote when temperatures are expected to fall below freezing. While alkaline cells begin to lose power as temperatures reach the teens and single digits (in F), lithium cells operate down to about -40F/C. (Based on past experience, we believe that the outdoor temperature measuring range specification below assumes the use of alkaline batteries in the remote.)

 

A low-battery icon to the right of the indoor temperature indicates that the clock's batteries need replacement, and a flashing outdoor temperature tells you that the remote for the indicated channel needs its batteries replaced.

 

The Atomix Worthington can be mounted on a wall, or you can extend the folding legs and place the clock on a table or shelf. Either way, this clock will look good while providing you with valuable time and temperature information.

 

Note: The 60kHz AM radio signal used by NIST to deliver the time information carries best at night. The signal may be interfered with by weather conditions and local interference. Building construction and location within the building can also affect reception. This clock is quartz controlled and will keep very good time for days when reception is poor, so this isn't normally a problem. You may find, however, that when you first insert the batteries, or during a Daylight Saving Time change, the clock will not be able to set itself immediately if reception is poor. Signal strength is indicated by the icon above seconds in the time display. You may wish to check the icon when selecting a location for your clock. Because wiring and plumbing in your walls can affect reception, moving the clock as little as a couple of inches can make a difference in the strength of the signal reaching the clock.

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