High Precision Laser Distance Measuring 50M Module Factory Infrared Ranging Module Sensor

The High Precision 50-Meter Laser Distance Measuring Module is a compact infrared ranging sensor designed for embedded applications requiring long-range and reliable distance measurement. Supporting UART communication, the module integrates easily with microcontrollers such as the ESP32 (Wemos LOLIN32), STM32, Arduino, and similar development boards.

Operating at 3.3 V with a recommended current supply of ~150 mA, the module provides fast and stable readings in indoor environments. Its pinout includes power, enable, UART TX/RX, and a convenient wiring harness with color-coded leads. The measuring process can be fully controlled over serial commands, including laser on/off, single measurement trigger, and module reset.

The sensor uses an infrared emitter—typically around 905–940 nm—making the laser spot invisible to the human eye but visible through a phone camera. Proper wiring requires crossing TX and RX between the module and host MCU, along with ensuring a common ground and the ENA pin held high.

Suitable for automation, robotics, mapping, and position-tracking projects, this module offers a clean and efficient way to obtain long-range measurements with high accuracy and low power consumption.

Specifications

Measurement Range: Up to 50 m

Technology: Infrared time-of-flight (IR laser)

Communication Interface: UART (typ. 9600 or 115200 baud)

Supply Voltage: 3.3 V (≈150 mA recommended)

Pins: 3V3, ENA (Enable), GND, RXD, TXD, NC

Cable Colors: Red (3V3), Black (GND), Green (RXD), Yellow (TXD)

Compatibility: ESP32, LOLIN32, Arduino, STM32, and other UART-based MCUs

Control Commands: Q (measure), L (laser ON), K (laser OFF), R (reset)

Applications

Robotics distance sensing

Indoor mapping and SLAM assistance

UAV/UGV object detection

Industrial automation

Smart measurement tools

Positioning and alignment systems