Benewake TF-UW500 Underwater Single-Point ToF LiDAR

Benewake TF-UW500 Underwater Single-Point ToF LiDAR is a high‑precision underwater single‑point LiDAR sensor engineered to deliver reliable distance measurement, mapping, and positioning beneath the water’s surface. Built on a direct Time‑of‑Flight (dToF) measurement principle, it uses a Class 1 eye‑safe visible red laser to achieve accurate, stable ranging performance even in challenging aquatic environments. Featuring an extended detection range exceeding five meters in low‑turbidity water (representing a tenfold improvement over earlier Benewake underwater models), the TF‑UW500 enables highly detailed underwater perception. Centimeter‑level accuracy and millimeter‑level repeatability support precise mapping and coordinate positioning, making the LiDAR especially effective for applications such as underwater robotics and pool cleaning systems.

The TF‑UW500 maintains compact dimensions (24mm × 16mm × 20.4mm) and a lightweight structure under five grams, ensuring easy integration into miniaturized underwater platforms. The narrow 0.5° field-of-view (FoV) provides a concentrated laser spot for superior directionality and reduced multipath interference compared to ultrasonic sensors.

Engineered for real‑world aquatic conditions, this Benewake sensor incorporates strong ambient‑light resistance up to 100KLux, enabling stable performance in outdoor pools or shallow water under direct sunlight. Advanced anti‑glare and anti‑interference algorithms further enhance signal stability in turbid or reflective environments. TF‑UW500 is also calibrated for 10+ common underwater materials, ensuring consistent accuracy across diverse pool surfaces such as tiles, marble, and cement.

With support for UART and I²C communication interfaces, low power consumption (5V × 100mA typical), and a durable optical‑electrical design, the TF‑UW500 provides a robust, highly adaptable sensing solution for underwater navigation, obstacle detection, and environmental perception. The device's performance advantages make it a leading choice for next‑generation underwater robots and pool‑cleaning platforms seeking reliable, high‑fidelity distance measurement.

Features

Eye-safe Class 1 visible laser
Excellent directionality
Wide incidence angle
Centimeter-level accuracy
Millimeter-level repeatability

Hardware-level filtering
Advanced anti-glare algorithms
Strong light resistance
Interference resistance
Enables full-path coordinate positioning and mapping

Applications

Pool cleaning robots
Underwater robots/ROVs
Underwater distance measurement

Applications requiring high ambient‑light resistance
General underwater navigation and obstacle detection

Specifications

Performance
- >5m underwater range
- ≤0.1m blind zone
- <1cm repeatability at 1σ
- <3cm accuracy (0.1m to 2m)
- 1mm distance resolution
- 20Hz default frame rate
- 100KLux ambient light resistance
Optical parameters
- Laser light source
- Red central wavelength
- 0.5°C FoV
- Class 1 eye safety (IEC 60825-1:2014; EN 60825-1:2014+A11:2021)

Mechanical and electrical
- <5V × 100mA average power consumption
- <700mA peak current at start-up
- 5V_DC ±0.2V_DC power supply
- 3.3V TTL logical voltage
- 1.0mm 4P connector, HC-1.0-4PWT model
Communication protocol
- UART/I²C interfaces (can be switched by command)
- Default 115200 baud rate (configurable)
- 8-bit data
- 1-bit stop
0°C to +50°C operating temperature range
24mm × 16mm × 20.4mm size
<5g typical weight (excluding cables)