General Tools and Instruments DTR900 v.1 - Manual (Page 7)

EXTEND AND SECURE THE
EXTERNAL SENSOR CABLE
To complete setup, the metal tip of the external
sensor cable must be placed in a different
environment than the display if you wish to
simultaneously monitor two different temperatures.
To install the sensor, remove the twist tie keeping
the external sensor cable in a bundle. Then extend
the cable under a window or through a hole in a
wall or frame. Attached to the cable is an L-shaped
piece of metal with loops at both ends. Detach this
component from the cable and slip the larger loop
over the white plastic cylinder that serves as a
socket for the metal sensor. Secure the tip of the
cable by placing a nail or screw through the
smaller loop of the metal piece and attaching
it to the frame or apron of a window or door or to
an outside wall.
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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. Until you
extend the external sensor cable (see the next
section), the OUT display will track the inside
temperature, as sensed by the DTR900 display
unit’s internal sensor.
Once you have set the time and date, flip the
DTR900 over in your hand and carefully thread the
external sensor cable first through the cutout on
either side of the battery compartment cover, and
then through the slot in the bottom of the well on
the same side. Then snap the battery compartment
cover back into place, first at the top and then at
the bottom, squeezing the bottom of the unit’s case
to make the cover fit.
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