
ROTARY HEAD DIGITAL
STEM THERMOMETER
99 Washington Street
Melrose, MA 02176
Phone 781-665-1400
Toll Free 1-800-517-8431
Visit us at www.TestEquipmentDepot.com
DT340RH
Please read this manual carefully and thoroughly before using this product.

Thank you for purchasing General Tools & Instruments’
DT340RH Rotary Head Digital Stem Thermometer. Please read
this user’s manual carefully and thoroughly before using the
product.
KEY FEATURES
• Head rotates up to 180° to any of nine viewing angles
• Wide measurement range
• Stainless steel stem
• °F/°C switch
• Auto power off
• Storage sleeve with pocket clip
• CE approved
WHAT’S IN THE PACKAGE
The thermometer and storage sleeve come in a white box
along with this user’s manual. An LR44 button battery is
pre-installed in the thermometer head.
PRODUCT OVERVIEW
The following image of the thermometer head shows the
DT340RH’s LCD and two control buttons.
2

OPERATING INSTRUCTIONS
The DT340RH is ready to use “right out of the box.” An LR44
battery is pre-installed in the head.
To measure the temperature of a soft solid or a liquid or gas
remove the thermometer from the sleeve and press the
ON/OFF
substance, bearing in mind that the temperature sensor is at
the base of the probe. Read the temperature on the LCD. To
improve your viewing angle, you can rotate the head up to
180° vertically to any of nine positions.
To change the measurement unit
To extend battery life, the DT340RH will automatically power
itself following any 10-minute period during which no button
is pushed. The thermometer will “remember” the unit in use
when it powers off and will resume using that unit when it is
next powered on.
button. Insert the stem (probe) into the target
, press the
°F/°C
button.
SPECIFICATIONS
Measurement Range: -40° to 450°F (-40° to 232°C)
Measurement Accuracy: ±1.8°F (±1°C) from 32° to 212°F
(0° to 100°C); ±3.6 °F (±2°C) elsewhere in range
Measurement Resolution: 0.1° (F or C)
Stem Length: 4.75 in. (121mm)
Auto Power Off Trigger: 10 minutes of front-panel inactivity
Head Rotation Range: 0° to 180°
Head Tilt Angles: 90°, 67.5°, 45°, 22.5°, 0°, -22.5°, -45°,
-67.5°, -90°
Dimensions of Head: 1.83 x 0.94 x 0.75 in. (46 x 24 x 19mm)
,
3