General Tools and Instruments DTR900 v.1 - Manual (Page 2)

INTRODUCTION
Thank you for purchasing General Tools &
Instruments’ DTR900 Inside-Outside Thermometer
with MIN/MAX Memory. Please read this user’s
manual carefully and thoroughly before using the
product.
The DTR900 is an affordable instrument that is
accurate enough (±1.8°F) for residential or office
monitoring of indoor and remote temperatures. Its
ability to store and recall two sets of maximum and
minimum temperatures—one sensed by the
display unit (installed indoors) and the other
sensed by a probe at the end of a 6.5 ft. (2m) long
cable—makes the DTR900 suitable for household
use or for monitoring the temperature of a
greenhouse or a food market’s walk-in and reach-
in refrigeration cases. In a food market, for
example, the display unit could be mounted
outside a refrigeration case and the external
sensor could be placed inside the case. In such an
installation, recalled time- and date-stamped
minimum and maximum temperature readings
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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 . . . . . . . . 11 – 12
Extend and Secure the
External Sensor Cable . . . . . . . . . . . . 13
Operating Instructions . . . . . . . . . . . . 14 – 17
Specifications . . . . . . . . . . . . . . . . . . . . . . 17
Maintenance Tips . . . . . . . . . . . . . . . . . . . 18
Warranty Information . . . . . . . . . . . . 18 – 19
Return for Repair Policy . . . . . . . . . . 19 – 20
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