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Kizen LaserPro LP300 vs Klein Tools IR1 Infrared Thermometer Side-by-Side Comparison

Don’t know which infrared thermometer to pick between the Klein Tools IR1 and the Kizen LaserPro LP300? Here’s our side-by-side comparison!

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Kizen LaserPro LP300

Klein Tools IR1 Infrared Thermometer

Kizen LaserPro LP300 vs Klein Tools IR1 Infrared Thermometer

Overall Verdict

The Klein Tools IR1 is one of the top-performing infrared thermometers on our list. It has received a solid 7.9 out of 10 in our benchmark tests. Not only does it deliver great performance, but its design is also impressive. It is rugged enough to be used in industrial sites.

However, there is one issue with its usability. The sole control button, used to switch between °F and °C, is hidden behind a screwed-in panel and the batteries. This means that you must use a screwdriver whenever you need to change the measurement unit or replace the batteries. This can be quite inconvenient and sets it apart from other models.

On the other hand, while the Kizen LaserPro LP300 is not as accurate as the Klein Tools IR1, it still has its merits. It scored 5.2 in our benchmark tests, primarily due to its underperformance in the hot test with cooking oil. However, in terms of design and usability, the Kizen performs admirably. It shares the same rugged design as the Klein Tools IR1 and offers excellent usability.

Considering everything, we recommend the Klein Tools IR1 over the Kizen despite its minor drawbacks due to its superior accuracy.

Ranking by
OverallScore Performance70% Design20% Usability10% ScoreOverall 70%Performance 20%Design 10%UsabilityKizen LaserPro LP300Klein Tools IR1 Inf...6.25.29.37.27.67.98.34.5
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Pros & Cons

  • Quite affordable for what it is
  • Solid build quality
  • Laser emitter is bright and can be easily tracked
  • Display panel is decently bright and data points can be easily read in many conditions (under studio lighting, in the dark, etc.)
  • Handle is indented and textured for easier gripping
  • Loud speaker
  • Rugged, industrial-grade design
  • Quality IR sensor provides decently accurate readings
  • Bright laser emitter
  • Bright backlit LCD display panel
  • Mediocre measurement accuracy
  • Doesn’t have many measurement mode
  • The backlight can’t be turned off
  • Doesn’t come with any extra measurement mode
  • The measurement unit switch and battery are hidden behind a screwed-in door

Key Specs

Dimensions
L4 x W1.77 x H5.9 inches
L4 x W1.77 x H5.9 inches
Weight
4.86 ounces
6.8 ounces
Display type
Backlit LCD panel
Backlit LCD panel
Measurement modes
1
0
Audio cues
Yes
No
Temperature range
-58°F to 1,122°F (-50°C to 600°C)
-4 to 752°F (-20 to 400°C)

Where to Buy

Price at publication
$21.95
$31.58

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Analysis and Test Results

Performance

Overall Performance Scoring
5.2
7.9

Cold Test with Ice

8.4
6.7
KIZEN Infrared Thermometer Cold Test
A reviewer is using the Kizen LaserPro LP300  at a distance of 12 inches to measure the surface temperature of an ice bath. The screen reads 30.4°F.
A reviewer is using the Kizen LaserPro LP300 at a distance of 16 inches to measure the surface temperature of an ice bath. The screen reads 31.3°F.
Klein Tools IR1 Infrared Thermometer Cold Test with Ice Video
The Klein Tools IR1 measuring an ice bath from a distance of 12 inches, with the screen showing 29.1°F.
The Klein Tools IR1 measuring an ice bath from a distance of 16 inches, with the screen displaying 30.9°F.
Ice Temperature
32°F
32°F
Temperature at 12”
30.4°F
29.1°F
Temperature at 16”
31.3°F
30.9°F

Hot Test with Cooking Oil

3.1
8.7
KIZEN Infrared Thermometer Hot Test
A reviewer is using the Kizen LaserPro LP300 at a distance of 12 inches to measure the surface temperature of a pan of hot oil. The screen reads 378°F.
A reviewer is using the Kizen LaserPro LP300 at a distance of 16 inches to measure the surface temperature of a pan of hot oil. The screen reads 374°F.
Klein Tools IR1 Infrared Thermometer Hot Test with Cooking Oil Video
The Klein Tools IR1 is being used by a reviewer to measure the temperature of a hot pan of oil from 12 inches away. The screen shows 361.8°F.
A reviewer is using the Klein Tools IR1 IR thermometer to measure the temperature of a hot pan of oil from 16 inches away. The screen displays 367°F.
Oil Temperature
361°F
361°F
Temperature at 12”
378°F
361.8°F
Temperature at 16”
374°F
367°F

Design

Overall Design Scoring
9.3
8.3

In the Box

The Kizen LaserPro LP300 lying on its side in the center of the frame. To the left is the shipping box, to the right a pack of AAA batteries, and underneath are user manuals and paperwork.
The Klein Tools IR1 is lying on its side in the center. To the left is the plastic packaging, to the right is the battery, the canvas holster, and user manual.

Dimensions

The dimensions of the Kizen LaserPro LP300 IR thermometer. The length is 4 inches, the width is 1.77 inches, and the height is 5.9 inches.
The Klein Tools IR1 standing upright on its handle on a slate grey concrete table.
Weight
4.9 oz (138 g)
6.8 oz (193 g)
Length
4.0" (10.2 cm)
4.0" (10.2 cm)
Width
1.8" (4.5 cm)
1.8" (4.5 cm)
Height
5.9" (15.0 cm)
5.9" (15.0 cm)

Build Quality

9.5
9.0
Klein Tools IR1 Infrared Thermometer Build Quality Video
The Klein Tools IR1 showcasing its side profile, laid horizontally on a slate grey concrete tabletop.

Laser Emitter

9.0
9.0
The red single-dot laser from the laser emitter of the Kizen LaserPro LP300 on the wall of a dark room.
The red single-dot laser from the laser emitter of the Kizen LaserPro LP300 on the wall of a dark room.
The laser emitter and the IR sensor of the Kizen LaserPro LP300 IR thermometer
The red laser dot of the Klein Tools IR1 infrared thermometer gun’s laser emitter in a dark room.
The red laser dot of the Klein Tools IR1 infrared thermometer gun’s laser emitter in a dark room.
The black-gloved hand of a reviewer holding and using the Klein Tools IR1 IR thermometer in scan mode. A red laser dot can be seen in the background.
Laser Pattern
Single-dot
Single-dot
Brightness
Good
Good

Display Panel

9.0
6.0
The blue backlit LCD display panel of the Kizen LaserPro LP300 IR thermometer.
A close-up of the backlit LCD panel at the back of the Klein Tools IR1 thermometer. The screen is displaying “84.9°F.”
The LCD panel has a backlight, but you can’t manually turn it off.
Display Type
Backlit LCD panel
Backlit LCD
Backlight
Yes
Yes
Display Size
1.18
1.18

Battery Compartment

The opened battery compartment of the Kizen LaserPro LP300, two AAA batteries have already been installed inside.
The screwed-in battery compartment of the Klein Tools IR1 thermometer is opened, revealing the receptacle for the 9V battery and a switch.
When the battery compartment is opened, other than the receptacle for the battery, you’ll also find a hidden switch to change the measurement unit of the thermometer.
The screwed-in battery compartment of the Klein Tools IR1 thermometer is opened, revealing the receptacle for the 9V battery and a switch.
The 9V battery cell that comes with the Klein Tools IR1 laying on a concrete grey table. The thermometer itself is next to it. The battery compartment is opened.
Battery Type
AAA
9V

Usability

Overall Usability Scoring
7.2
4.5

Handling

9.0
9.0
The Kizen LaserPro LP300 IR thermometer in the white-gloved hand of a reviewer.
The Kizen LaserPro LP300 IR thermometer in the white-gloved hand of a reviewer.
The textured handgrip of the Kizen LaserPro LP300 IR thermometer.
The black-gloved hand of a reviewer holding the Klein Tools IR1 IR thermometer.
The black-gloved hand of a reviewer holding the Klein Tools IR1 IR thermometer.
A close-up view of the handle of the Klein Tools IR1, focusing on the textured handgrip portion.
The ridged patterning on the handle of the Klein Tools IR1 IR thermometer

Measurement Modes

3.0
0.0
Emissivity
0.10-1.00
No
Average Mode
No
No
Min Mode
No
No
Max Mode
No
No
Calibration
No
No
Alarm Mode
No
No

Audio Cues

9.0
0.0
The speaker holes and the control panel of the Kizen LaserPro LP300 IR thermometer.

Behind the Comparison

Headshot of Matthew Lee
Matthew LeeReviewer

Matthew Lee is a writer and editor for HealthyKitchen101. With over 8 years working for various outlets and agencies, specializing in tech review and other subjects of note, such as current affairs.

Headshot of Lap Vo
Lap VoTest Lead

Lap is Head of the Research, Testing, and Review Team (RTR Team) at HealthyKitchen101.com, where he directs and supervises the testing of kitchen gadgets and appliances.

Headshot of Nguyen Ntk
Nguyen NtkVisual Specialist

Nguyen Ntk is a graphic designer, photographer, and videographer whose philosophy centers around respecting and celebrating the beauty of reality. Through his lenses, Nguyen strives to capture the true essence of objects and events, showcasing and highlighting authentic features without distortion or exaggeration.

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