LRF100H 100 m Industrial DToF LiDAR Distance Sensor for Wind Power, Landslide and Level Monitoring

TECHNICAL SPECIFICATIONS

OUTLINE DIMENSION(mm)

PIN INTERFACE

No.	Definition / Wire Color	User Interface
1	9-36V (Red)	External Power +
2	Power GND (Black)	External Power -
3	Port GND (Yellow)	GND
4	TX (Green)	RX
5	RX (Blue)	TX

Product Description

The LRF100H is a mid–long range industrial LiDAR distance sensor based on the Direct Time of Flight (DToF) principle. It combines a 100 m measuring range, high update rate and wide 9–36 V DC supply in a compact module for wind power monitoring, landslide and deformation monitoring, material level detection and collision-avoidance protection on land vehicles and overhead bridge cranes.

The LRF100H measures from 0.05 m to 100 m on 90% reflectivity targets and from 0.05 m to 30 m on 10% reflectivity targets, with a blind zone of 5 cm. Accuracy is specified as ±10 cm below 10 m and 1% of distance at 10 m and above, with repeatability of ±5 cm below 10 m and ±10 cm at 100 m, and a distance resolution of 1 cm. This gives engineers clear, quantitative performance for mid–long distance positioning, safety margins and structural monitoring.

The measuring frequency can be set from 20 Hz up to 10 kHz, with a default of 1 kHz, so the same sensor can be used either as a fast feedback channel in dynamic applications or with reduced output for slower monitoring tasks. The field of view is about 4 mrad, allowing the beam to remain relatively tight over long distances, which is helpful when monitoring towers, blades, slopes or specific structural points.

To handle harsh lighting, the LRF100H offers ambient light immunity up to 100 kLux, maintaining performance in bright outdoor conditions such as wind farms, open-pit mines and exposed material yards. It operates at a central wavelength of 905 nm, classified as photobiological safety Class 1, making it suitable for fixed installations and mobile machinery when integrated with appropriate mechanical protection.

Electrically, the module accepts a 9–36 V DC supply, making integration straightforward into 12 V or 24 V industrial systems. Peak current is around 100 mA, average current roughly 30 mA, giving an average power consumption of about 0.7 W, which is attractive for distributed nodes and battery-backed monitoring systems. Communication is available through both UART and I²C interfaces. The default UART configuration uses a baud rate of 460800 bps, 8 data bits, 1 stop bit and no parity.

UART output uses a simple 4-byte frame in hexadecimal little-endian format: a frame header 0x5C, two bytes of distance in centimetres (0–65 535 cm, with 65 535 cm indicating out-of-range) and a check byte generated as the inverse of the sum of the middle bytes. Command frames are used to read the serial number, set and read the baud rate, read the software version and configure the output frequency via a frequency-division value, with the effective frequency given by f = 1 000 000 / (division+1). This protocol design makes the LRF100H easy to integrate into PLCs, industrial controllers and embedded hosts.

Mechanically, the LRF100H is compact, with dimensions of 33 × 34 × 18 mm and a weight of 20±2 g, supplied via a 1.25 mm, 5-pin, 50 cm stranded-wire harness. The pins provide 9–36 V power, power ground, port ground, TX and RX, simplifying connection to external control cabinets and embedded boards. The operating temperature range is −20°C to +60°C, supporting both indoor industrial environments and many outdoor deployments such as wind turbines and slope-monitoring stations.

Typical applications include drone attitude holding for inspection drones, where stable 100 m distance data supports low-altitude flight; wind power monitoring, including tower and blade clearance measurement; landslide and deformation monitoring, where continuous distance measurements reveal slope movement trends; material level detection in silos and stockpiles; and positioning or collision-avoidance monitoring of land transport vehicles and overhead bridge cranes in factories, ports and logistics yards.

With its 100 m range, 1 kHz default update rate, 1 cm resolution, 9–36 V DC supply, strong 100 kLux ambient light immunity and dual UART/I²C interfaces, the LRF100H is a cost-effective industrial LiDAR choice wherever reliable mid–long range distance measurement is needed in a compact sensor.