Meskernel LDJ-150 Green Laser Distance Sensor Module for RTK, 100 m Range, 520 nm Class II, TTL/RS232/RS485/Bluetooth

Overview

Meskernel LDJ-150 is a laser distance sensor module designed for precise long-range measurement and serial integration. The green 520 nm Class II eye-safe laser supports up to 100 m range with ±3–5 mm accuracy, making it suitable for industrial automation, engineering surveying, and intelligent warehousing. The module offers TTL/UART, RS232, RS485, and Bluetooth data communication for secondary development and system integration.

The LDJ series provides single and continuous measurement modes and robust 24-hour operation. Optional configurations include dual-color laser (green/red) and selectable output frequencies of 3 Hz, 10 Hz, and 20 Hz. The LDJ-150 J240613 model uses DC 2.5–3.6 V power and features compact dimensions of 64×40×18 mm.

Key Features

• Green laser, eye-safe Class II; laser wavelength 510–550 nm (<1 mW)
• Long-range measurement up to 100 m; optional 70 m/100 m versions
• Measuring accuracy ±3–5 mm; measuring time 0.05–4 s
• Single-shot and continuous measurement modes; supports 24-hour continuous operation
• Interfaces: TTL/UART, RS232, RS485, Bluetooth; supports secondary development
• Compatible with common development platforms; suitable for automation, robotics, and IoT integration
• ABS+PCB construction; compact and lightweight
• OEM/ODM/OBM customization support

Specifications

Applications

• Industrial automation: level and distance monitoring for inventory and process control
• Transfer belt: object spacing and alignment on conveyor systems
• Engineering surveying: point-to-point distance measurement for layout and mapping
• Intelligent logistics: navigation, sorting, and warehouse management
• Granary and other warehouse: material level measurement
• Robot vacuum cleaner: obstacle distance sensing and avoidance

Details

LDJ Module, Red/Green Laser, High Precision, Max 200m Measuring Distance

40.00mm x 62.91mm x 40.00mm with 2 R1.50mm and 2 R1.05mm through-holes, 4.8mm deep hole (R0.79mm), plus multiple mounting holes.

Green laser distance sensor with multiple interface options

Laser distance sensor module with six pins: TXD, RXD, VCC, PWREN, GND. Operates on 3.3V (>300mA), enables power at high level via PWREN. Supports serial communication. Includes pull-up resistors.

Laser distance sensor circuit diagram with multiple BBox modules and master control.

Meskernel LDJ-150 Green Laser Distance Sensor interface displays real-time distance measurements, serial settings, data logs, and module status. Features include auto measurement, single measure, data save, and graph tracking for monitoring sensor performance.