Normal Time Mode
1. Time
2. Calendar
3. Week of year
4. Month
5. Day
6. Temperature
7. Signal Strength Indicator
8. Alarm and Snooze
9. Time zone map
User's Guide
9
8
7
1
2
°
6
5
°
Model 445810
Radio Controlled Thermometer
Calendar/Clock with Alarm
4
3
Rear Panel
SET
ADJUST RECEIVE
MODE
1. Mode Key
2. Set Key
4. Receive Key
Introduction
Congratulations on your purchase of the Extech 445810 Radio Controlled
Thermometer Calendar/Clock with Alarm. This device is shipped fully tested and
calibrated and, with proper use, will provide years of reliable service.
3. Adjust Key
5. Reset Button
2
3
4
1
5
RESET
Alarm Time Mode
1. Alarm time
2. Alarm mode
3. Snooze icon
4. Alarm icon
Operation
4
3
2
1
GETTING STARTED
1. Remove the battery door by slightly pressing the knob upwards.
2. Insert one new AA size battery as per indication marked on the battery
compartment.
Setting the Alarm
3. Close the battery door.
1. With the clock in normal time display mode press MODE key to enter Alarm mode.
2. Hold SET key for 2 seconds until hour digits flash
3. Press or hold ADJUST to change hour.
4. Press SET again. The minute digits will flash
5. Press or hold ADJUST to change minutes
4. When the battery is inserted the unit will beep.
5. The Radio Controlled Clock will automatically start scanning for the radio
controlled time signal.
6. The default time zone is Pacific zone. If you are in this time zone, changing is
not required. Otherwise, change to the correct time zone (Refer to ‘Select the
Time Zone’.)
6. Press MODE to save.
Notes
In some cases, the clock may be unable to receive a signal immediately. Due to
atmospheric disturbances, the best reception often occurs at night.
Alarm Mode
HOUR Setting
MINUTE Setting
The clock is susceptible to interference. Always place the clock away from devices such
as TV’s and computers. Avoid placing clock on or near a metal object.
Setting Time Manually
1. Remove battery for 30 seconds.
2. Hold SET for 2 seconds until HOUR digits flash.
3. Press or hold ADJUST to set.
Do not start the clock in a moving vehicle. Avoid closed areas.
4. Press SET again to step through Hours > Minutes > Seconds > 12/24Hr > Year .>
FUNCTION KEYS
Month > Date.
MODE key:
SET key:
Switch between Normal Time Mode and Alarm Time Mode.
In clock mode selects temperature units (°F/°C). In alarm mode selects
time zone. In editing mode, step the setting items.
5. Press MODE to save.
ADJUST key:
In normal time mode, toggle between Time and Year display. In normal
time setting mode, change the setting value. In Alarm time mode,
switch ALARM/SNOOZE function ON/OFF.
°
°
°
°
°
Normal Display
HOUR Setting
MINUTE Setting
RECEIVE key: Press receive key to receive time signal.
RESET key: In case of mal-function after insert of battery, use a pin to press the
RESET key to restart the clock.
°
SIGNAL STRENGTH INDICATOR
The signal indicator displays signal strength in 3 levels. Wave segment flashing means
time signals are being received. The signal quality could be classified into three types:
DATE Setting
SECOND Setting
R
°
°
Bad Signal Quality Acceptable Excellent
Month Setting
YEAR Setting
12/24 Hour Setting
SETTING THE TIME ZONE
Make sure the time zone is already set to appropriate location. The default time zone is
Pacific zone. If your location is out of Pacific zone, please do the following steps:
1. Press the MODE key to enter the alarm time mode.
2. Press the SET key to select the proper time zone. P=Pacific M=Mountain C=Central
E=Eastern
ALARM AND SNOOZE FUNCTIONS
1. Press MODE to select the alarm display
2. Press ADJUST key so bell icon “ ” appears
3. Activate Snooze by pressing ADJUST until “Zz” snooze icon appears.
4. To de-activate Alarm and Snooze, press ADJUST until icons no longer appears.
5. Press ALARM to stop alarm. In snooze mode the alarm will snooze four times for four
minutes.
Warranty
EXTECH INSTRUMENTS CORPORATION warrants this instrument to be free of defects in parts and
workmanship for one year from date of shipment (a six month limited warranty applies to sensors and
cables). If it should become necessary to return the instrument for service during or beyond the warranty
period, contact the Customer Service Department at (781) 890-7440 ext. 210 for authorization or visit our
website www.extech.com for contact information. A Return Authorization (RA) number must be issued before
any product is returned to Extech. The sender is responsible for shipping charges, freight, insurance and
proper packaging to prevent damage in transit. This warranty does not apply to defects resulting from action
of the user such as misuse, improper wiring, operation outside of specification, improper maintenance or
repair, or unauthorized modification. Extech specifically disclaims any implied warranties or merchantability
or fitness for a specific purpose and will not be liable for any direct, indirect, incidental or consequential
damages. Extech's total liability is limited to repair or replacement of the product. The warranty set forth
above is inclusive and no other warranty, whether written or oral, is expressed or implied.
Support line (781) 890-7440
Technical Support: Extension 200; E-mail: support@extech.com
Repair & Returns: Extension 210; E-mail: repair@extech.com
Product specifications subject to change without notice
For the latest version of this User Guide, Software updates, and other
up-to-the-minute product information, visit our website: www.extech.com
Extech Instruments Corporation, 285 Bear Hill Road, Waltham, MA 02451
Copyright © 2007 Extech Instruments Corporation
All rights reserved including the right of reproduction in whole or in part in any
form.
445810 V1.0 7/07
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