Thank you for purchasing General Tools & Instruments’
LCR318 Mini Hygro-Thermometer. Please read this
user’s manual carefully and thoroughly before using
the product.
The LCR318 is an ideal instrument for monitoring the
humidity and temperature environment of pianos,
humidors, wine cellars, musical instrument cases and
computer rooms.
• Foldaway stand for desk mounting; also can be
wall-mounted
• Includes battery
• CE approved
WHAT’S IN THE BOX
The LCR318 comes in a box along with:
• A preinstalled “LR44” battery with an activation tab
• This user’s manual
KEY FEATURES
• Simultaneously displays indoor temperature (in °F)
and relative humidity (RH) as a percentage
• Min and Max temperature and humidity memory
• Large LCD
• Low battery warning
SETUP INSTRUCTIONS
ACTIVATE THE UNIT
If you are reading this, you have already removed the
unit from the bubble-wrap bag. Peel away the film
protecting the display.
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To activate the unit:
1. Open the battery compartment (marked OPEN) on the
right side of the back of the unit by sliding its cover
down, in the direction of the arrow stenciled on it.
2. Remove the black activation tab under the LR44
button battery. Discard the tab.
3. Install the battery in the well so its rounded side faces
down and its flat side (marked “LR44”) faces up. The
battery does not snap into place, so do not apply
downward pressure.
4. Replace the battery compartment cover by sliding it
up, in the direction opposite the arrow on it. The
pressure of the cover is what holds the battery in
place.
MOUNT THE UNIT
To leave the unit free to move on a horizontal
surface, lift the foldaway stand on the back of the unit
by placing your fingertip in the recess on the bottom
edge of the unit.
To attach the unit to a wall or vertical surface, obtain
a pair of Velcro strips and—without separating them—
trim them to a size of 1-3/4 in. by 3/8 in., or slightly
smaller than the recessed rectangular mounting area on
the top rear of the unit. Remove the paper backing from
one strip and press its exposed sticky side into the
recess. Remove the paper backing from the other strip
and press the unit against the wall or surface at the
desired position.
To detach the unit in order to change the battery, grab
it and pull until the two Velcro strips separate.
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OPERATING INSTRUCTIONS
By default, the unit displays the current ambient
temperature on the left readout and the current RH level
on the right readout.
To display the highest temperature and RH values
measured since the unit was last reset, press the
MAX/MIN button on the right side of the front panel
once. The values will appear for 7 seconds, along with
the term MAX in the upper right corner. After 7 seconds,
the display will return to showing real-time temperature
and RH values.
To display the lowest temperature and RH values
measured since the unit was last reset, press the
MAX/MIN button twice. The values will appear for
7 seconds, along with the term MIN in the upper right
corner. After 7 seconds, the display will return to
showing real-time temperature and RH values.
To reset the temperature and humidity memory,
press the CLEAR button on the front panel.
SPECIFICATIONS
Temperature Measurement Range: 14° to 140°F
Temperature Measurement Accuracy: ±1.8°F
Relative Humidity Measurement Range: 10 to 99%
RH Measurement Accuracy: ±5% of reading
Temperature Resolution: 1°
RH Resolution: 1%
Display Size: 1.4 x 0.7 in.
Dimensions: 1.5 x 2.05 x 0.6 in. (38 x 52 x 15mm)
Power Source: 1 “LR44” battery (included)
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WARRANTY INFORMATION
General Tools & Instruments’ (General’s) LCR318
Mini Hygro-Thermometer is warranted to the original
purchaser to be free from defects in material and
workmanship for a period of one year. Subject to certain
restrictions, General will repair or replace this
instrument if, after examination, the company
determines it to be defective in material or
workmanship.
This limited warranty does not apply to damages that
General determines to be from an attempted repair by
non-authorized personnel or misuse, alterations, normal
wear and tear, or accidental damage. The defective unit
must be returned to General Tools & Instruments or to a
General-authorized service center, freight prepaid and
insured.
RETURN FOR REPAIR POLICY
Every effort has been made to provide you with a
reliable product of superior quality. However, in the
event your instrument requires repair, please contact
our Customer Service to obtain an RGA (Return Goods
Authorization) number before forwarding the unit via
prepaid freight to the attention of our Service Center at
this address:
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.
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NOTES
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1110
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.com
LCR318 User’s Manual
Specifications subject to change without notice
NOTICE - WE ARE NOT RESPONSIBLE FOR TYPOGRAPHICAL ERRORS.