INSIDE-OUTSIDE THERMOMETER WITH MIN/MAX MEMORY USER’S MANUAL DTR900 Please read this manual carefully and thoroughly before using this product.
TABLE OF CONTENTS Introduction . . . . . . . . . . . . . . . . . . . . . . 3 – 4 Key Features . . . . . . . . . . . . . . . . . . . . . . . . 4 What’s In the Box . . . . . . . . . . . . . . . . . . . . . 5 Product Overview . . . . . . . . . . . . . . . . . 5 – 7 Setup Instructions . . . . . . . . . . . . . . . . 7 – 13 Activate the Unit . . . . . . . . . . . . . . . 7 – 8 Choose Your Temperature Unit & Time and Date Format . . . . 9 – 10 Set the Time and Date . . . . . . . .
could help the market operator determine the impact of a power failure on the temperature of stored food. The DTR comes in a box along with a nondetachable external sensor-tipped probe, one “AAA” battery and this user’s manual.
햷 햶 햸 Fig. 2. The back of the DTR900 with the battery compartment closed 햺 햹 햻 Figure 2 shows the back of the unit with the battery compartment closed. Note: • The °F/°C switch (callout 5) at the top of the case. • The two hanger holes (callouts 6 and 7) at the top corners of the case. Use these to wall-mount the unit. • The rectangular recess (callout 8) near the bottom of the case. Use this recess to raise the unit’s kickstand for mounting on a horizontal surface.
to on the right side of the unit (marked by a + sign). This tab must be removed by the end user to activate the unit. 햾 햽 Fig. 3. The back of the DTR900 with the battery compartment open Before removing the activation tab, make sure you know the current date and have access to an accurate clock. Once you remove the tab (applying battery power to the unit), the TIME display at right will start flashing, indicating that it is waiting for an input.
when the display is flashing “11:XX AM” advances the display to “12:XX PM”. • The DTR900 will show the date in a “MonthDay” format (as in the U.S., China and Japan). If the switch is in the °C position: • The DTR900 uses a 24-hour clock (also called military or railway time). For example, pressing the MIN/MAX button when the TIME display is flashing “12:XX” advances the display to “13:XX”. • The DTR900 will show the date in a “Day-Month” format (as in South America and most of Europe).
Immediately after the month setting is stored, the day field of the DATE display will begin flashing. (The field will be on the right if you have chosen the °F setting, and on the left if you have chosen °C.) Without delay, press the MIN/MAX button as many times as necessary to advance the day to the correct value. Then press the IN/DATE button to store the setting. Once you have stored the day setting, the OUT display at upper left will automatically begin tracking temperature.
OPERATING INSTRUCTIONS Once you have installed the external sensor cable, the DTR900 will monitor both inside (IN) and outside (OUT) temperatures. This display configuration—with IN and OUT temperatures shown on the left and the TIME shown at right— is the “normal” configuration, as shown in Fig. 1. To switch the IN display at lower left to display the current date (see Fig. 4), press the IN/DATE button.
• Press the MIN/MAX button three times and the upper left display will show the maximum inside temperature measured since the battery was installed or the unit was reset, indicated by the words MAX and IN. The lower left and right displays will indicate the date and time when this maximum temperature occurred.
MAINTENANCE TIPS Although the external sensor cable is waterproof, the display unit is NOT waterproof. Do not install the display unit outdoors. To clean the display unit, wipe it gently with a dry or damp cloth. Avoid using chemical cleaners. To replace the battery, refer to the Setup Instructions on page 7.
General Tools & Instruments 80 White Street • New York, NY 10013 212-431-6100 Remember to include a copy of your proof of purchase, your return address, and your phone number and/or e-mail address. GENERAL TOOLS & INSTRUMENTS 80 White Street New York, NY 10013-3567 PHONE (212) 431-6100 • FAX (212) 431-6499 TOLL FREE (800) 697-8665 e-mail: sales@generaltools.com www.generaltools.
