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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 -40°F/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. For additional information, please see
the Chaney
Instrument Clock FAQ.
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