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12:1 INFRARED
LASER THERMOMETER
72648
TM
Owner’s Manual & Safety Instructions
Save This Manual Keep this manual for the safety warnings and precautions, assembly,
operating, inspection, maintenance and cleaning procedures. Write the product’s Date number in the back
of the manual (or month and year of purchase if product has no number). Keep this manual and the receipt
in a safe and dry place for future reference. 25l
When unpacking, make sure that the product is intact
and undamaged. If any parts are missing or broken,
please call 1-800-444-3353 as soon as possible.
Copyright
©
2025 by Harbor Freight Tools
®
. All rights reserved.
No portion of this manual or any artwork contained herein may be reproduced in
any shape or form without the express written consent of Harbor Freight Tools.
Diagrams within this manual may not be drawn proportionally. Due to continuing
improvements, actual product may differ slightly from the product described herein.
Tools required for assembly and service may not be included.
Read this material before using this product.
Failure to do so can result in serious injury.
SAVE THIS MANUAL.
Page 2 For technical questions, please call 1-800-444-3353. Item 72648
WARNING SYMBOLS AND DEFINITIONS
This is the safety alert symbol. It is used to alert you to
potential personal injury hazards. Obey all safety messages
that follow this symbol to avoid possible injury or death.
Indicates a hazardous situation which, if not avoided,
will result in death or serious injury.
Indicates a hazardous situation which, if not avoided,
could result in death or serious injury.
Indicates a hazardous situation which, if not avoided,
could result in minor or moderate injury.
Addresses practices not related to personal injury.
IMPORTANT SAFETY INFORMATION
Read all safety warnings and instructions.
Failure to follow the warnings and instructions may result in serious injury.
1. Do not use for medical purposes.
2. Do not open the housing other
than battery compartment.
3. Avoid direct eye exposure.
4. Do not expose the tool to
rain or wet conditions.
5. Stay alert, watch what you are doing and
use common sense when operating the
tool. Do not use while you are tired or
under the influence of drugs, alcohol
or medication. A moment of inattention
may result in serious personal injury.
6. Do not use the tool if the Trigger does
not turn it on and off. Any tool that cannot
be controlled with the Trigger is
dangerous and must be repaired.
7. Disconnect the battery before making
any adjustments, changing accessories,
or storing the tool. Such preventive
safety measures reduce the risk of
activating the Laser accidentally.
8. Maintain the tool. Check for misalignment
or binding of parts, breakage of parts and
any other condition that may affect the
tool’s operation. If damaged, have the
tool repaired before use. Many accidents
are caused by poorly maintained tools.
9. Use the tool in accordance with these
instructions, taking into account the
working conditions and the work
to be performed. Use of the tool for
operations different from those intended
could result in a hazardous situation.
10. Have your tool serviced by a qualified
repair person using only identical
replacement parts. This will ensure that
the safety of the tool is maintained.
TM
SAFETY OPERATION MAINTENANCESETUP
Page 3For technical questions, please call 1-800-444-3353.Item 72648
11. Do not mix old and new batteries. Do not
mix alkaline, standard (carbon-zinc), or
rechargeable (nickel-cadmium) batteries.
Position batteries in proper polarity. Do
not use swollen or leaking batteries.
12. Maintain labels and nameplates on the tool.
These carry important safety information.
If unreadable or missing, contact
Harbor Freight Tools for a replacement.
13. This product is not a toy.
Keep it out of reach of children.
14. The warnings, precautions, and instructions
discussed in this instruction manual cannot
cover all possible conditions and situations
that may occur. It must be understood by the
operator that common sense and caution are
factors which cannot be built into this product,
but must be supplied by the operator.
SAVE THESE INSTRUCTIONS.
Specifications
Temperature Range -76°F to 1400°F (-60°C to 760°C)
Temperature Accuracy
932°F to 1400°F (500°C to
760°C) ±3.6°F (2°C) or ±2%
whichever is greater
32°F to 932°F (0°C to
500°C): ± 3°F (1.5°C) or
±1.5% whichever is greater
<32°F (0°C) ± (3.6°F + 0.2°F per
degree) (±(2°C +0.2°C per degree))
Response Time <300ms
Spot Size Ratio 12:1 (Distance:Spot Size)
Operating Temperature 32°F - 122°F
Operating Humidity 10 - 90% RH
Storage Temperature 14°F - 140°F
Storage Humidity ≤ 80% RH
Emissivity Range 0.1 - 1.0
Battery AAA x2 (included)
Date:
LASER LIGHT
DO NOT STARE INTO BEAM
Max. Output: <1mW, Wavelength: 630-670nm
Mfr Date:__________ , _____
This product complies with 21 CFR
1040.10 and 1040.11.
Distributed by
Harbor Freight Tools 26677 Agoura Road
Calabasas, CA 91302
72648
CLASS II LASER PRODUCT
UPC 193175555878
CAUTION: Use of controls
or adjustments or performance
of procedures other than those
specified herein may result in
hazardous radiation expose.
CAUTION: The use of optical
instruments with this product
will increase eye hazard.
SAFETYOPERATIONMAINTENANCE SETUP
Page 4 For technical questions, please call 1-800-444-3353. Item 72648
Setup - Before Use:
Read the ENTIRE IMPORTANT SAFETY INFORMATION section
at the beginning of this manual including all text under
subheadings therein before set up or use of this product.
Functions
Display
Down Button
(°C/°F)
Up Button
(Lock)
Tripod Mounting
Socket (1/4-20 UNC)
Mode Button
Handle
Battery
Cover
Infrared
Lens
Trigger
Display
1
2 3 4 5
6
7
8
9
10
11
12
13
1. Scan
2. Laser
3. Data Hold
4. Backlight
5. High/Low Alarm
6. Battery Status
7. Lock Symbol
8. Temperature Unit °C/°F
9. Emissivity
10. Emissivity Symbol
11. Temperature Values (MAX/MIN/AVG/DIF)
12. Symbols for (MAX/MIN/AVG/DIF)
13. Current Temperature Value
Overall Flow
1. Press Mode button or pull Trigger
to turn on Thermometer.
2. Press Up button to switch between
Scan (continuous reading) and
Hold (single reading) modes.
3. Press Down button to switch
unit of measurement between
Fahrenheit and Celsius.
4. Use Mode, Up and Down buttons to
adjust parameters (see below).
SAFETY OPERATION MAINTENANCESETUP
Page 5For technical questions, please call 1-800-444-3353.Item 72648
Mode Selections
In the default mode, the current temperature value is always displayed at the center.
Press the Mode button to adjust secondary readings, emissivity, and other settings.
MAX/MIN/AVG/DIF
Press the Mode button to review Maximum, Minimum, Average and Difference Values.
The thermometer automatically loads the last selected mode after reboot.
Emissivity
Emissivity is the amount of thermal
energy emitted from a surface.
Generally, organic materials, painted, dull or
dark surfaces have higher emissivity. Metals
and reflective surfaces have lower emissivity.
This thermometer is preset to 0.95.
To adjust Emissivity:
1. Press the MODE button repeatedly,
until the E symbol starts flashing.
2. Press Up/Down Button to adjust the
emissivity value between 0.1 to 1.0.
3. Press MODE Button or Trigger to confirm.
Approximate Surface Emissivity
Asphalt 0.95 to 0.98
Concrete 0.94
Cement 0.96
Sand 0.90
Cast Iron 0.80
Earth 0.92 to 0.96
Water 0.92 to 0.96
Ice 0.96 to 0.98
Snow 0.83
Approximate Surface Emissivity
Glass 0.90 to 0.95
Ceramic 0.90 to 0.94
Marble 0.94
Plaster 0.80 to 0.90
Mortar 0.89 to 0.91
Brick 0.93 to 0.96
Cloth (black) 0.98
Human Skin 0.98
Lather 0.75 to 0.80
Charcoal (powder) 0.96
Lacquer 0.80 to 0.95
Lacquer (matt) 0.97
Rubber (black) 0.94
Plastic 0.85 to 0.95
Timber 0.90
Paper 0.70 to 0.94
Chromium Oxides 0.81
Copper Oxides 0.78
Iron Oxides 0.78 to 0.82
Textiles 0.90
HAL/LAL
Adjust the High Temperature Alert by using
the up and down buttons (-76°F to 1400°F),
press the Mode button to confirm. Adjust
the Low Temperature Alert by using the
up and down buttons (-76°F to 1400°F),
press the Mode button to confirm.
The thermometer provides visual
and audible alerts when the current
reading exceeds set thresholds.
1. Press MODE button until (Hi
or Lo) symbol flashes.
2. Press Up/Down buttons to adjust
between -76 to 1,400 °F.
3. Press the MODE button to confirm.
SAFETYOPERATIONMAINTENANCE SETUP
Page 6 For technical questions, please call 1-800-444-3353. Item 72648
Laser Pointer
Laser Pointer: Press and hold Trigger and press
Down (°C/°F) Button to turn Laser ON and OFF.
Note: In Hold mode the unit will
automatically power off in 15 seconds.
Operating Instructions
Read the ENTIRE IMPORTANT SAFETY INFORMATION section
at the beginning of this manual including all text under
subheadings therein before set up or use of this product.
General Operation
Note: Do not expose Thermometer to strong electromagnetic fields, such
as those generated by an arc welder, induction heater, etc.
Note: When moving Thermometer to an area with significantly different ambient temperature,
allow Thermometer to adjust to the new ambient temperature for 30 minutes before use.
The surface being tested should be larger than the size calculated by the diagram below.
Spot
Center
Distance
4"
diameter
at 48"
distance
2"
diameter
at 24"
distance
1"
diameter
at 12"
distance
Note: In Hold mode the Thermometer will shut
off and lose settings after 15 seconds of non-use.
In Scan mode the Thermometer will remain on.
1. Remove dirt and grime from surface
to be measured as needed.
2. Adjust Emissivity as needed.
Note: Black electrical tape or black paint may
be applied to highly reflective surfaces to raise
emissivity. Leave Thermometer set to 0.95 and
allow tape or paint to come to same temperature
as surface before taking measurement.
3. Set Reference Temperature and
Threshold Value as needed.
4. Press and hold Trigger, point at
surface to be measured.
5. Read Measurement(s).
SAFETY OPERATION MAINTENANCESETUP
Page 7For technical questions, please call 1-800-444-3353.Item 72648
Maintenance and Servicing
Procedures not specifically explained in this manual must
be performed only by a qualified technician.
TO PREVENT SERIOUS INJURY FROM ACCIDENTAL OPERATION:
Release the Trigger and remove the battery from the Laser Thermometer before
performing any inspection, maintenance, or cleaning procedures.
TO PREVENT SERIOUS INJURY FROM TOOL FAILURE:
Do not use damaged equipment. If damage is noted, have
the problem corrected before further use.
Cleaning, Maintenance, and Lubrication
1. BEFORE EACH USE, inspect the general
condition of the tool. Check for:
• loose hardware,
• misalignment or binding of parts,
• cracked or broken parts,
• damaged electrical wiring, and
• any other condition that may
affect its safe operation.
2. AFTER USE, wipe lens first, then external
surfaces of the tool with clean,damp
cloth. Only use water, do not use soap or
chemicals. DO NOT submerge tool in water.
3. Remove battery if not in use for long periods.
4. Store tool in a dry location.
5. Other than battery, there are no replaceable
parts on this Thermometer. Repairs should
be done by a qualified technician.
Battery Replacement
1. Remove Screw from Battery Cover.
2. Remove Battery Cover.
3. Remove battery and replace with same.
4. Replace Battery Cover.
5. Replace Screw.
Calibration
Have Thermometer calibrated by a qualified technician every year.
Record Product’s Date Code Here:
Note: If product has no date code, record month and year of purchase instead.
Note: Replacement parts not available. Reference UPC 193175555878.
SAFETYOPERATIONMAINTENANCE SETUP
26677 Agoura Road • Calabasas, CA 91302 • 1-800-444-3353
Limited 90 Day Warranty
Harbor Freight Tools Co. makes every effort to assure that its products meet high quality
and durability standards, and warrants to the original purchaser that this product is free from
defects in materials and workmanship for the period of 90 days from the date of purchase. This
warranty does not apply to damage due directly or indirectly, to misuse, abuse, negligence or
accidents, repairs or alterations outside our facilities, criminal activity, improper installation,
normal wear and tear, or to lack of maintenance. We shall in no event be liable for death,
injuries to persons or property, or for incidental, contingent, special or consequential damages
arising from the use of our product. Some states do not allow the exclusion or limitation of
incidental or consequential damages, so the above limitation of exclusion may not apply to
you. THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES, EXPRESS
OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS.
To take advantage of this warranty, the product or part must be returned to us with
transportation charges prepaid. Proof of purchase date and an explanation of the complaint
must accompany the merchandise. If our inspection verifies the defect, we will either repair or
replace the product at our election or we may elect to refund the purchase price if we cannot
readily and quickly provide you with a replacement. We will return repaired products at our
expense, but if we determine there is no defect, or that the defect resulted from causes not
within the scope of our warranty, then you must bear the cost of returning the product.
This warranty gives you specific legal rights and you may also
have other rights which vary from state to state.
TM
