LM576LD Engineering Laser Tester uses an OSRAM LD green laser light source (wavelength 520nm±5nm) and can emit laser horizontal and vertical lines separately or simultaneously. It provides accurate horizontal and vertical references and plumb line references for indoor construction layout and calibration. It is easy to operate and has a wide range of applications.
The core value of the LM576LD lies in its combination of "16-line 360° multi-dimensional measurement + high-brightness green light + large-capacity lithium battery": it is the LM series 360° ground-level measuring instrument with the most transmitting lines (16 lines), providing 360° full-angle coverage for both horizontal and vertical transmission angles. It adopts a magnetically damped weighted automatic leveling system (leveling range ±(3±1)°, leveling time <3 seconds), achieving a horizontal/vertical accuracy of ≤±3mm/10m (±60''). Equipped with a 5200mAh removable high-capacity lithium battery (Type-C interface power supply, can be used while charging), it has a working time of approximately 6 hours and supports wireless remote control, pulse mode (can be used indoors and outdoors), locking and diagonal line drawing functions, etc.
The UNI-T LM576LD Engineering Laser Tester is a 16-line green laser level (360° laser ground level), belonging to the UNI-T product line of architectural surveying tools - Laser Levels. The LM576LD can emit laser horizontal and vertical lines separately or simultaneously, providing accurate horizontal and vertical references and plumb line references for indoor construction layout and calibration. It is easy to operate and has a wide range of applications.
In the UNI-T LM laser level product line, the LM576LD Engineering Laser Tester is a high-end 16-line green laser (LD) model. This UNI-T series covers two sub-series: red (R) and green (LD), with emission lines ranging from 8 to 16 lines:
|
Model |
Light Source
|
Laser Line Count |
Launch Angle |
|
LM585R |
Red Light |
8 Lines |
1 Horizontal 360° + 4 Vertical 120° |
|
LM576R |
Red Light |
16 Lines |
Horizontal 360° / Vertical 360 |
|
LM575R |
Red Light |
12 Lines |
360° |
|
LM573R |
Red Light |
12 Lines |
360° |
|
LM585LD |
Green Light |
8 Lines |
/ |
|
LM576LD |
Green Light (LD) |
16 Lines |
H:360°/V:360° |
The LM576LD Engineering Laser Tester offers 16-line omnidirectional measurement capability, making it one of the 360° ground-level meters with the most transmitting lines in the LM series. It has 360° horizontal and vertical transmission angles, providing rare full-angle coverage in the industry.
The core positioning of the LM576LD is a professional laser level featuring "16 lines, 360° omnidirectional coverage, high-brightness green light, and high-precision automatic leveling." Its value proposition focuses on three points:
16-line 360° omnidirectional coverage: Both horizontal and vertical emission angles are 360°, allowing for one-time deployment to cover the entire workspace, while providing horizontal, vertical, and plumb line references, significantly improving construction layout efficiency.
OSRAM high-brightness green light: Utilizing an OSRAM green LD light source (520nm±5nm), it offers high brightness and excellent visual visibility, and can be used both indoors and outdoors with pulse mode.
High-precision automatic leveling: Magnetic damping plumb bob automatic leveling (range ±(3±1)°, time <3 seconds), horizontal/vertical accuracy ≤±3mm/10m (±60''), with over-range alarm via buzzer and laser line flashing.
With its integrated floor/wall/ceiling-mounted design, 5200mAh high-capacity lithium battery, and wireless remote control, the LM576LD provides a convenient operating experience while ensuring high precision.
The LM576LD laser level is suitable for the following typical applications:
Construction Layout: Provides horizontal and vertical references for interior construction layout, wall masonry, and door/window installation.
Interior Decoration and Finishing: Includes ceiling installation, wall leveling, and electrical/plumbing wiring positioning.
Flooring and Tile Laying: Provides floor leveling, tile horizontal lines, and wall/floor vertical alignment.
Furniture and Home Furnishing Installation: Includes furniture leveling and cabinet/bathroom installation.
Wall Leveling and Calibration: Provides precise horizontal, vertical, and plumb line references.
Suitable for both indoor and outdoor use: Can also be used in strong outdoor lighting conditions when used with the receiver's pulse mode.
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|
Feature Category |
Specific Characteristics |
Illustrate |
|
Laser Type |
Green Light (LD) |
OSRAM Green Light Source |
|
Laser Line Count |
16 Lines |
3D Multi-line Projection |
|
Wavelength |
520nm±5nm |
Green light is highly visible to the human eye |
|
Laser Power |
30mW |
High Brightness |
|
Laser Level |
Class II |
Safety Laser Level |
|
Launch Angle |
H:360°/V:360° |
Full-angle Coverage |
|
Automatic Leveling Range |
±(3±1)° |
Magnetic Damping Weight Type |
|
Automatic Leveling Time |
<3 seconds |
Quick Peace |
|
Accuracy |
≤±3mm/10m(±60'') |
Horizontal/Vertical Accuracy |
|
Working Distance |
Pulse mode 50m (with receiver) |
Available for both indoor and outdoor use |
|
Wireless Remote Control |
Support |
Remote operation |
|
Diagonal Lines |
Support |
Locking function |
|
Power Supply |
5200mAh lithium battery pack (removable, Type-C) |
Use while charging |
|
Working Hours |
Approximately 6 hours |
Large capacity battery life |
|
Operating Temperature |
-10℃-50℃ |
Wide temperature range |
The LM576LD Engineering Laser Tester is similar in function to its siblings, the LM570LD-II, LM573LD-II, LM575LD, and LM585LD (all featuring automatic leveling, wireless remote control, and pulse mode). The main differences lie in the number of laser lines and the emission angle:
|
Comparison Dimensions |
LM576LD |
LM585LD |
LM575LD |
LM573LD-II |
LM570LD-II |
|
Laser Type |
Green Light(LD) |
Green Light |
Green Light |
Green Light |
Green Light |
|
Laser Line Count |
16 Lines |
8 Lines |
12 Lines |
12 Lines |
Crosshairs |
|
Launch Angle |
H:360°/V:360° |
1 horizontal 360° + 4 vertical 120° |
360° |
360° |
/ |
|
Accuracy |
≤±3mm/10m |
≤±3mm/10m |
≤±3mm/10m |
≤±3mm/10m |
/ |
|
Anping Area |
±(3±1)° |
±(3±1)° |
±(3±1)° |
±(3±1)° |
/ |
|
Wireless Remote Control |
√ |
/ |
/ |
/ |
/ |
|
Working distance |
Pulse 50m |
Pulse 50m |
Pulse 50m |
Pulse 50m |
/ |
|
Battery |
5200mAh Lithium Battery |
/ |
/ |
/ |
/ |
Key differentiator: The core advantage of the LM576LD Engineering Laser Tester lies in its superior 16-line omnidirectional measurement capability. Compared to the LM585LD (8 lines) and LM575LD (12 lines), both green laser lines, the LM576LD offers up to 16 lines of horizontal and vertical omnidirectional (360°/360°) laser markings. It is the most comprehensive model in the LM green laser series, covering the entire workspace in one go, making it particularly suitable for large spaces, multi-dimensional benchmarks, and even simultaneous multi-point layout needs.
The LM576LD Engineering Laser Tester belongs to the green light (LD) sub-series, and differs from the red light (R) series in key aspects such as light source wavelength and visibility:
|
Comparison Dimensions |
LD, such as LM576LD |
R, such as LM576R |
|
Wavelength |
520nm±5nm(Green Light) |
Red Light(Approx. 635/650nm) |
|
Human Visual Visibility |
About 4 times higher than red light |
Standard |
|
Suitable lighting environment |
Clearer in strong light/outdoor environment |
Indoor/Low-light environment |
|
Laser line count |
16-Line (LM576LD) |
16-Line (LM576R) |
Green light (520nm) is located in the wavelength range where the human eye has high visual sensitivity. It is brighter and more conspicuous than red light. Therefore, in strong light or outdoor environments, the clarity of the green light of the LM576LD Engineering Laser Tester is significantly better than that of the red light model, making it particularly suitable for professional construction occasions with high requirements for line width and clarity.
The core function of the LM576LD Engineering Laser Tester is to generate horizontal, vertical, and plumb line references for stakeout and calibration. The module's core functions include:
16-line 360° laser marking: Can emit horizontal and vertical lines separately or simultaneously, with a 360° horizontal/vertical emission angle, providing horizontal, vertical, and plumb line references.
Automatic leveling: Magnetic damping weighted automatic leveling (range ±(3±1)°, time <3 seconds), ensuring the laser line is always in a precise horizontal/vertical state.
Locking function (can emit diagonal lines): After locking the pendulum, it can emit tilted angles (diagonal lines), adapting to the special needs of slope/incline measurement.
Wireless remote control: Supports wireless remote control for easy long-distance operation.
Indoor and outdoor dual-scene (pulse mode): Equipped with a pulse function, the working distance can reach 50 meters when used with a receiver (Detector), usable both indoors and outdoors.
The LM576LD achieves complete human-machine interaction through simple panel buttons and a wireless remote control:
Leveling/Locking Switch: Switches between automatic leveling mode and locking diagonal line striking mode.
Power Management: Powered by a high-capacity lithium battery, Type-C charging while in use, supporting long-term continuous operation.
Alarm Feedback: Dual alarm: buzzer + laser line flashing when the laser is out of leveling range.
Wireless Remote Control: Remotely turn the laser on/off and switch modes via the remote control for convenient long-distance operation.
The LM576LD Engineering Laser Tester is a Class II laser (<1mW), which is a safe laser product that can be viewed directly by the human eye and meets the safety standards for consumer laser products. Nevertheless, prolonged direct viewing of the laser beam should still be avoided during normal use.
Physical and Environmental Characteristics
Integrated floor, wall, and ceiling mounting: Compact design, minimum wall mounting distance 10mm, floor mounting distance 15mm, suitable for floor, wall, and ceiling mounting.
Compact structure: 138×89×147mm, net weight 653g, lightweight and portable, can be placed on a workbench or tripod.
Wide temperature range: Operating temperature -10℃~50℃, adaptable to various construction environments.
The LM576LD Engineering Laser Tester is a portable laser level, and its core operation is entirely controlled via the control panel and wireless remote control, requiring no dedicated host computer driver software or programming environment. While the UNI-T website provides a "Driver and Programming Software" section, this product is primarily intended for use as a standalone measuring tool and does not involve the SCPI/programming control interface of traditional instruments.
Transcend the Limits of Off-the-Shelf Hardware
We understand that generic, standard hardware configurations frequently introduce performance bottlenecks when confronted with unique, high-specification technical criteria. To eliminate these integration barriers, our seasoned hardware engineering division delivers comprehensive, build-to-specification OEM and ODM customization services configured precisely to your operational parameters.
Whether your deployment mandates re-engineered frequency spectrum profiles, sophisticated synchronous triggering topologies, or application-specific chassis frameworks, we operate in tight synchronization with your engineering team to construct the optimal architecture. Our agile and highly collaborative design lifecycle guarantees that your niche application metrics are perfectly achieved, while enforcing strict adherence to our uncompromising, zero-defect quality assurance standards.



Q1: Why does the laser line keep flashing and the machine beep alarm when the level is turned on?
A1:
This is an automatic leveling alarm that is out of range. The LM576LD's automatic leveling range is typically within ±3°. If the ground or stand on which the instrument is placed is tilted at an angle exceeding 3°, the internal counterweight magnetic damping system will be unable to calibrate it back to absolute level, and the machine will issue an audible and visual alarm. Simply level the instrument or adjust the tripod to place it on a relatively flat surface, and the alarm will automatically stop, and the laser line will return to its normal illumination.
Q2: What if the laser line of the LM576LD is not visible to the naked eye under strong outdoor light or direct sunlight?
A2:
Activate Pulse Mode: Press and hold the "OUT" or pulse function button on the machine. The laser line will enter a high-frequency flashing state (the brightness may appear slightly dimmer to the naked eye, but it is within the pulse operating frequency).
Use with a laser receiver: A dedicated laser receiver is required. In pulse mode, even if the light is completely invisible to the naked eye at a distance of 30-50 meters, the receiver can still detect the laser signal and accurately guide you to the horizon position through a beep and LED indicator.
Q3: Compared to a level with a regular plastic casing, what is the purpose of the LM576LD's "metal window frame"?
A3:
Construction site environments are extremely harsh, and levels are most susceptible to damage from accidental bumps or drops, which can cause the light-transmitting window to shatter, or from high temperatures causing the plastic window frame to deform and drift in accuracy. The upgraded LM576LD Engineering Laser Tester uses an aluminum alloy/metal protective window frame, which greatly improves its impact resistance and wear resistance, and is less prone to material embrittlement under the high temperatures of summer, effectively protecting the internal Osram LD light source.
Q4: After using a spirit level for a long time, you may find that the lines it produces become thicker or blurry. What could be the reason?
A4:
Window Contamination: Dust, cement slurry, and putty powder from construction sites easily adhere to glass windows. First, use a blower to remove large dust particles, then gently wipe the glass inside the metal window frame with a cotton ball soaked in anhydrous alcohol.
Backlight Reflection: If there is fog or water inside the glass, do not attempt to disassemble it yourself; instead, place it in a dry, well-ventilated area to air dry.

If you are looking for an affordable excellent choice. As the Laser Tester product line, the LM576LD Engineering Laser Tester is highly competitive in the high-end Laser Tester market.It doesn't make you pay for features you don't need, yet it fully meets your requirements in terms of key measurement capabilities.
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