USER MANUAL
Model 365510
Digital Stopwatch
Introduction
Congratulations on your purchase of the Extech 365510 Digital Stopwatch with Split Time, Two
Competitor monitoring, Alarm and Clock features. The accuracy of the clock is ±3 seconds per 24
hours. Careful use of this stopwatch will provide years of reliable service.
Operation
NORMAL MODE
1. In Normal Mode the Hours/Minutes/Seconds and the day of week is displayed.
2. Press and hold the SPLIT/RESET button to view the Alarm Time.
3. To turn the Alarm ON or OFF, press the START/STOP button while holding down the
SPLIT/RESET button (the bell icon in the upper right-hand corner of the display is on
when the Alarm is turned ON).
4. Press and hold START/STOP to view the calendar month and date.
STOP WATCH MODE (To access, press the MODE button once from Normal Mode)
When the Stopwatch Mode is first accessed, the SU-FR-SA icons will flash.
A. Elapsed Timer
1. Press Start/Stop to Start (SU-SA icons flash)
2. Press Start/Stop to Stop (SU-FR-SA icons flash)
3. Press Start/Stop Restart
4. Press Start/Stop to Stop
5. Press Split/Reset to reset the display. Press MODE to return to Normal Mode.
B. Split Time
1. Press Start/Stop to Start (SU-SA icons flash)
2. Press Split/Reset to Split (SU-TH-SA icons flash)
3. Press Split/Reset to release Split (SU-SA icons flash)
4. Press Start/Stop to Stop (SU-FR-SA icons flash)
5. Press Split/Reset to reset the display. Press MODE to return to Normal Mode.
C. Two Competitor Timer
1. Press Start/Stop to Start (SU-SA icons flash)
2. Press Split/Reset to Split (SU-TH-SA icons flash)
3. Press Start/Stop to Stop (SU-TH-FR-SA icons flash)
4. Press Split/Reset to release Split (SU-FR-SA icons flash)
5. Press Split/Reset to reset the display. Press MODE to return to Normal Mode.
NOTE: Press all three buttons simultaneously to reset to the Elapsed Timer mode.
SETTTING DATE AND TIME (To access, press MODE button 3 times from Normal Mode)
Press SPLIT/RESET to scroll through the programmable digits fields. The flashing digit is the digit
that is ready to be edited. Use the START/STOP button to edit the flashing digit. When setting
the hours, minutes, and seconds you can press START/STOP to reset the selected digit to zero;
press and hold it down to quickly scroll. The hour digits will scroll through A (for AM), P (for PM)
and H (for 24 hour clock). Press MODE to return to normal operation.
ALARM SET (To access, press MODE twice from the Normal Mode)
1. Once ALARM SET mode is accessed the hour indicator and MO icon will flash.
2. Press STOP/START to change the hour. This step also activates the alarm and displays the alarm
indicator icon (bell in upper right-hand corner of LCD display).
3. Press SPLIT/RESET to select minutes.
4. Press STOP/START to advance the minutes.
5. Press MODE to save alarm setting and to return to time display.
6. To enable the Alarm, follow the instructions in step 3 of the Normal Mode section. Note that the
Alarm time setting will reflect the AM, PM, or H mode programmed above in the SETTING DATE
AND TIME section.
ALARM SNOOZE and ALARM SILENCE
When the alarm sounds, press START/STOP. A 5-minute snooze period will begin. To silence the
alarm without snooze, press SPLIT/RESET after the alarm sounds.
HOUR CHIME (stop watch beeps once every hour on the hour)
To set the Hour Chime ON, press and hold SPLIT/RESET then press MODE (while continuing to
hold SPLIT/RESET) until the days of the week appear on the top of the LCD. To turn Hour Chime
OFF press MODE (while continuing to hold the SPLIT/RESET button) until the days of the week
switch OFF.
Battery Replacement
This Stopwatch uses an LR-44 or A-76 alkaline button battery. The Phillips head screws on the rear
of the watch must be removed to open the watch and access the battery. It is recommended that a
qualified technician replace battery. Battery life is typically one year.
Two-year Warranty
Teledyne FLIR warrants this Extech brand instrument to be free of defects in parts and
workmanship for two years from date of shipment (a six-month limited warranty applies to sensors
and cables). To view the full warranty text please visit: http://www.extech.com/support/warranties.
Contact Customer Support
Customer Support Telephone List: https://support.flir.com/contact
Calibration, Repair, and Returns: repair@extech.com
Technical Support: https://support.flir.com
Copyright © 2023 Teledyne FLIR Commercial Systems, Inc.
All rights reserved including the right of reproduction in whole or in part in any form
www.extech.com
This document does not contain any export-controlled information
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