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The UNI-T LM120C is a professional-grade, 120-meter laser distance meter featuring an innovative camera-assisted aiming system that revolutionizes outdoor and long-distance measurements. As part of UNI-T's advanced C-series, this instrument combines high-precision laser technology with a built-in camera and 2.4-inch IPS color display, solving the common problem of laser dot visibility in bright sunlight or at extreme distances.
Designed for architects, construction professionals, surveyors, and serious DIY enthusiasts, the LM120C delivers exceptional accuracy of ±2mm while offering an unprecedented 12 measurement modes. Its camera function displays a real-time image of the target on the vibrant color screen, allowing you to precisely aim at distant points even when the laser dot is invisible to the naked eye . With IP65 dust and water resistance and 2-meter drop protection, this rugged instrument is built to withstand the harshest job site conditions .
120m Long Range with Camera Assistance: Measures distances up to 120 meters with millimeter precision. The built-in camera displays the target on the 2.4" IPS screen, making it easy to aim at distant points even in bright sunlight .
High Accuracy (±2mm): Delivers professional-grade accuracy of ±2mm , ensuring reliable results for construction, surveying, and architectural applications .
12 Measurement Modes: Includes single/continuous measurement, area/volume, Pythagoras (indirect measurement), triangle area, automatic horizontal/vertical, trapezoid, and staking-out functions—covering virtually every measurement scenario .
2.4" IPS Color Display: Features a vibrant 240×320 IPS screen with 178° viewing angles and auto-rotating display for comfortable viewing from any angle .
Electronic Tilt Sensor: Built-in electronic level (±90.0°) with automatic horizontal and vertical leveling functions for accurate alignment and indirect measurements .
IP65 Dust & Water Protection: Fully protected against dust ingress and water jets, ensuring reliable operation in challenging job site conditions .
2-Meter Drop Proof: Rugged construction with double-injection anti-slip soft-grip handle withstands accidental falls from ladders and scaffolding .
100-Group Data Memory: Stores up to 100 measurements for convenient recall and documentation, eliminating manual note-taking on site .
Three Selectable Measurement References: Choose between front, middle, or rear reference points for maximum flexibility in corners, recesses, and various measuring situations .
Rechargeable Battery System: Powered by 3× AAA Ni-MH rechargeable batteries charged via Micro-USB, providing eco-friendly and cost-effective operation .
1/4" Tripod Mount: Standard thread for tripod mounting ensures stable, precise measurements during long-distance or continuous monitoring applications .
Multi-Unit Display: Switchable between meters, inches, feet, and feet+inches to suit regional preferences .
The UNI-T LM120C delivers professional-grade performance across all key measurement parameters .
| Feature | Specification |
|---|---|
| Electronic Tilt Angle Measurement | ±90.0° |
| Automatic Leveling (Horizontal/Vertical) | ✓ |
| Built-in Spirit Level | Yes (万向水平泡) |
| Item | Quantity |
|---|---|
| UNI-T LM120C Laser Distance Meter | 1x |
| AAA Ni-MH Rechargeable Batteries (1.2V) | 3x |
| Micro USB Charging Cable | 1x |
| Soft Carrying Case / Bag | 1x |
| User Manual | 1x |
| Wrist Strap | 1x |
The LM120C's standout feature is its camera-assisted aiming system, which addresses a fundamental limitation of standard laser distance meters:
Visible Target Display: The built-in camera projects a real-time image of the target onto the 2.4" IPS color screen .
4× Digital Zoom: Magnify distant targets for precise aiming, especially useful for outdoor measurements beyond 50 meters .
Bright Sunlight Operation: When the laser dot is invisible due to ambient light, the camera display allows you to accurately center the crosshairs on your target .
Rotatable Screen: The auto-rotating display ensures comfortable viewing whether you're measuring horizontally, vertically, or overhead .
Press the power button to activate the device and laser .
Use the camera display to aim the crosshairs at the target .
Press the measure button to instantly display the distance on the large color screen .
Press and hold the measure button to enter continuous measurement mode .
Move the device while the display updates in real-time .
Release the button to lock the final measurement .
Ideal for finding minimum/maximum distances or measuring room diagonals .
Select area or volume function from the mode menu .
Measure length and width (and height for volume) .
The device automatically calculates and displays the total area or volume .
Use this function to measure heights or distances that are inaccessible (e.g., measuring building height from the ground) .
The device uses the Pythagorean theorem to calculate the desired dimension based on two or three measured sides .
The electronic tilt sensor automatically calculates horizontal distance even when measuring at an angle .
Perfect for measuring ceiling heights or horizontal clearances without leveling the device .
Define a target distance, and the device guides you to the exact position .
Ideal for marking equal intervals during construction or installation work .
The LM120C automatically stores measurement results .
Recall up to 100 groups of saved measurements for review or documentation .
Choose between front, middle, or rear measurement reference points using the reference button .
Allows for flexible measurement options in corners, recesses, or when using the device against walls .
The UNI-T LM120C is an ideal all-in-one tool for:
Measuring room dimensions, wall lengths, and ceiling heights up to 120m
Calculating material quantities for flooring, tiling, and drywall
Verifying structural dimensions and layouts on large construction sites
Construction site supervision and quality control
Creating accurate floor plans and elevations
Planning furniture placement and room layouts
Measuring for custom cabinetry and built-ins
Office layout planning and space optimization
Garden and landscape design measurements
Property boundary verification
Terrain assessment for outdoor projects
Agricultural and forestry applications
Home renovation projects
Furniture assembly and placement
Workshop measurements and layout
Personal projects requiring precise measurements
The UNI-T LM120C is widely recognized as an innovative solution for professionals who frequently work outdoors or at long distances. Its camera-assisted aiming system sets it apart from conventional laser distance meters.
Camera Function: Users praise the camera aiming system for making outdoor measurements practical and accurate, especially in bright sunlight where laser dots are invisible .
Build Quality: The IP65 rating and rugged construction provide confidence in demanding job site environments .
Display Quality: The 2.4" IPS color screen with auto-rotate is frequently highlighted as a major advantage over monochrome displays .
Value for Money: The combination of camera technology, extensive measurement modes, and professional accuracy offers exceptional value .
Battery Type: Uses rechargeable AAA Ni-MH batteries (included) with Micro-USB charging—ensure you keep the charging cable accessible .
Weight: At 170g, it's slightly heavier than basic models, but this reflects the added camera and display technology .
Outdoor Use: While the camera solves aiming issues, using a target plate is still recommended for maximum accuracy at extreme distances .
Discontinued Status: According to the official UNI-T website, this model has been discontinued . Availability may be limited to existing stock from distributors .
The UNI-T LM120C represents an innovative approach to laser distance measurement, solving the perennial problem of outdoor laser visibility with its integrated camera system. Its 120m range, ±2mm accuracy, 12 measurement modes, and rugged IP65 construction make it exceptionally well-suited for construction professionals, surveyors, and anyone who needs reliable measurements in challenging conditions.
The official UNI-T product page describes it as featuring "12 measurement modes," "camera-aided measurement," and "IP65 dust and water proof" with "2m drop test" certification—credentials that speak to its professional-grade design .
Whether you're measuring building heights from the ground, verifying structural dimensions on a sunny construction site, or planning infrastructure projects, the LM120C's camera-assisted aiming ensures you'll hit your target every time—literally.
Note: This model has been discontinued by the manufacturer . Availability may be limited to existing stock from distributors
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