Accuracy
< 3 cm (0.1 ~ 2m)
Reported claim
Configuration: TF-UW500; datasheet/manual PDF page 1; 0.1–2 m; 100 klux, NTU <0.5, 30% target reflectivity, perpendicular incidence, water depth greater than 1 m (note 1).
Accuracy① | < 3 cm (0.1 ~ 2m)
Global Robotics
TF-UW500 is an underwater single-point LiDAR module for pool-cleaning robots and other host-sealed underwater systems. It specifies a range greater than 5 m indoors at NTU <0.5 and 30% target reflectivity with perpendicular incidence, and a default 20 Hz output. The bare module has no stated protection rating; sealing, optical windows and optical alignment belong to the host design. UART and I²C are command-selectable. The manual gives inconsistent default distance-unit wording, retained as a configuration gap. Cover image: Manufacturer exact-model reference illustration.
Source-backed claims. Configuration, workload and evidence type matter when comparing products.
< 3 cm (0.1 ~ 2m)
Reported claim
Configuration: TF-UW500; datasheet/manual PDF page 1; 0.1–2 m; 100 klux, NTU <0.5, 30% target reflectivity, perpendicular incidence, water depth greater than 1 m (note 1).
Accuracy① | < 3 cm (0.1 ~ 2m)
1.33
Reported claim
Configuration: TF-UW500; datasheet/manual PDF page 11; Manufacturer conversion instruction for underwater output used in air; not an accuracy guarantee.
Dist: Output underwater distance measurement value, multiplied by a coefficient of 1.33 in air,
100 KLux
Reported claim
Configuration: TF-UW500; datasheet/manual PDF page 1; Captured manufacturer table; no unprinted tolerance or operating mode inferred.
Ambient light resistance | 100 KLux
< 5V × 100mA
Reported claim
Configuration: TF-UW500; datasheet/manual PDF page 1; Indoors, 0 klux, 25 °C (note 2). Power formula retained literally; startup peak duration unspecified.
Average power consumption② | < 5V × 100mA
≤0.1 m
Reported claim
Configuration: TF-UW500; datasheet/manual PDF page 1; Captured manufacturer table; no unprinted tolerance or operating mode inferred.
Blind zone | ≤0.1 m
Red
Reported claim
Configuration: TF-UW500; datasheet/manual PDF page 1; Captured manufacturer table; no unprinted tolerance or operating mode inferred.
Central wavelength | Red
UART / I²C (Can be switched by command)
Reported claim
Configuration: TF-UW500; datasheet/manual PDF page 2; Captured manufacturer table; no unprinted tolerance or operating mode inferred.
Communication Interface | UART / I²C (Can be switched by command)
9600, 14400, 19200, 38400, 56000, 57600, 115200, 128000, 230400, 256000, 460800, 500000, 512000, 600000, 750000, 921600
Reported claim
Configuration: TF-UW500; datasheet/manual PDF page 11; Listed supported settings; other values fall back to 115200.
Baud rate can be set to 9600, 14400, 19200, 38400, 56000, 57600, 115200, 128000, 230400, 256000, 460800, 500000, 512000, 600000, 750000, and 921600. If other value were set, TF-UW500 will set it to 115200.
1.0mm-4P, model is HC-1.0-4PWT
Reported claim
Configuration: TF-UW500; datasheet/manual PDF page 2; Captured manufacturer table; no unprinted tolerance or operating mode inferred.
Connector | 1.0mm-4P, model is HC-1.0-4PWT
1 GND; 2 VCC; 3 UART RX / I²C SDA; 4 UART TX / I²C SCL
Reported claim
Configuration: TF-UW500; datasheet/manual PDF page 10
NO. UART I2C PIN 1 GND GND PIN 2 VCC VCC PIN 3 RX SDA PIN 4 TX SCL
mm
Reported claim
Configuration: TF-UW500; datasheet/manual PDF page 11; Conflicts with same-page 9-byte/cm default heading and page 14 default0x01; confirm actual saved device configuration.
Dist: Output underwater distance measurement value, multiplied by a coefficient of 1.33 in air, can be configured to output in millimeters or centimeters as needed, mm is default.
Default 20 Hz
Reported claim
Configuration: TF-UW500; datasheet/manual PDF page 1; Captured manufacturer table; no unprinted tolerance or operating mode inferred.
Default frame rate | Default 20 Hz
9-byte/cm
Reported claim
Configuration: TF-UW500; datasheet/manual PDF page 11; Manual heading and page 14 default format 0x01 indicate cm; same page prose says mm default. Both preserved, no selected default assumed.
Serial port output format: 9-byte/cm (Default)
> 5 m Indoor, NTU< 0.5, 30% reflectivity, the light beam is perpendicular to the target surface
Reported claim
Configuration: TF-UW500; datasheet/manual PDF page 1; Indoors, NTU <0.5, 30% reflectivity, light perpendicular to target; greater than 5 m is the printed claim, not a maximum.
Detection range under water | > 5 m Indoor, NTU< 0.5, 30% reflectivity, the light beam is perpendicular to the target surface
24.0 mm × 16.0 mm × 20.4 mm
Reported claim
Configuration: TF-UW500; datasheet/manual PDF page 2; Captured manufacturer table; no unprinted tolerance or operating mode inferred. Typical reference values; detailed tolerances require manufacturer confirmation.
Typ. Dimensions③ | 24.0 mm × 16.0 mm × 20.4 mm
Minimum 0 mm; maximum 65535 mm
Reported claim
Configuration: TF-UW500; datasheet/manual PDF page 18; Configurable protocol output limits, not sensor physical range.
Default 0 65535 Opt: !1: read, 1: write Min_dist: minimum distance output in mm Max_dist: maximum distance output in mm
1 mm
Reported claim
Configuration: TF-UW500; datasheet/manual PDF page 1; Captured manufacturer table; no unprinted tolerance or operating mode inferred.
Distance resolution | 1 mm
Class1 (IEC 60825-1:2014; EN 60825-1:2014+A11:2021)
Reported claim
Configuration: TF-UW500; datasheet/manual PDF page 1; Captured manufacturer table; no unprinted tolerance or operating mode inferred.
Eye safety | Class1 (IEC 60825-1:2014; EN 60825-1:2014+A11:2021)
< 0.5°
Reported claim
Configuration: TF-UW500; datasheet/manual PDF page 1; Captured manufacturer table; no unprinted tolerance or operating mode inferred.
FoV | < 0.5°
Rectangular spot; divergence <0.5° in any direction
Reported claim
Configuration: TF-UW500; datasheet/manual PDF page 8; Theoretical values; manual explicitly notes manufacturing and installation differences from theory.
The field of view of TF-UW500 is shown in the following figure, with a rectangular spot shape and a divergence angle of less than 0.5 ° in any direction.
7-bit; default 0x10; range 0x08–0x77; default write 0x20/read 0x21
Reported claim
Configuration: TF-UW500; datasheet/manual PDF page 12
In this document, the address of I²C slave device is a 7-bit value with value range [0x08, 0x77] ([08, 119] in decimal). For the first byte after I²C releases a start signal, the 7-bit address should be shifted leftward for one bit (i.e. multiplied with 2), and then filled with the read-write sign on the lowest bit. For TF-UW500, the default address of slave device is 0x10, the address for write operations is 0x20, and the address for read operations is 0x21.
Up to 400kps
Reported claim
Configuration: TF-UW500; datasheet/manual PDF page 12; Manufacturer literal kps retained, not silently normalized to a different unit.
TF-UW500 supports up to 400kps clock speed as slave machine and its default address is 0x10.
0x00/0x01 cm; 0x3C/0x3D mm
Reported claim
Configuration: TF-UW500; datasheet/manual PDF page 19
0x00 R DIST_LOW -- Ranging value in cm as the unit 0x01 R DIST_HIGH -- 0x3C R DIST_LOW -- Ranging value in mm as the unit 0x3D R DIST_HIGH --
100 ms
Reported claim
Configuration: TF-UW500; datasheet/manual PDF page 12; Manufacturer recommends waiting before reading to validate a preceding write.
After a write operation on the I²C register, it takes TF-UW500 some time to process. If users need to read the value from the register for validation purposes, we recommend waiting for 100ms after the write operation, prior to the next read operation.
Laser
Reported claim
Configuration: TF-UW500; datasheet/manual PDF page 1; Captured manufacturer table; no unprinted tolerance or operating mode inferred.
Light source | Laser
3.3 V TTL
Reported claim
Configuration: TF-UW500; datasheet/manual PDF page 2; Captured manufacturer table; no unprinted tolerance or operating mode inferred.
Logical voltage | 3.3 V TTL
2025-10-16
Manufacturer specification
Configuration: TF-UW500; manufacturer web page; Day-precision manufacturer launch announcement; article says officially available worldwide and mass production underway. Exact first shipment date is not independently established.
“The Underwater Eye” Evolves Again! Benewake Launches the World’s First Mass-Produced Underwater Single-Point LiDAR – TF-UW500 2025-10-16
< 5 g (excluding cables)
Reported claim
Configuration: TF-UW500; datasheet/manual PDF page 2; Captured manufacturer table; no unprinted tolerance or operating mode inferred. Typical reference values; detailed tolerances require manufacturer confirmation.
Typ. Weight③ | < 5 g (excluding cables)
2
Reported claim
Configuration: TF-UW500; datasheet/manual PDF page 9
TF-UW500 has 2 installation positioning holes available for use.
0 ℃~ + 50 ℃
Reported claim
Configuration: TF-UW500; datasheet/manual PDF page 2; Captured manufacturer table; no unprinted tolerance or operating mode inferred.
Operating temperature | 0 ℃~ + 50 ℃
At least 1 mm in every direction
Reported claim
Configuration: TF-UW500; datasheet/manual PDF page 9
Due to optical assembly tolerances, please leave at least 1mm of additional space in all directions around the circular barrel.
0x01: 9-byte cm; 0x06: 9-byte mm
Reported claim
Configuration: TF-UW500; datasheet/manual PDF page 14; Output format setting; default table says0x01, while earlier prose saysmm default.
Format: 0x01: 9byte cm, 0x06: 9byte mm
< 700mA
Reported claim
Configuration: TF-UW500; datasheet/manual PDF page 1; Indoors, 0 klux, 25 °C (note 2). Power formula retained literally; startup peak duration unspecified.
Peak current at start up ② | < 700mA
Automatic data transmission; no power switch
Reported claim
Configuration: TF-UW500; datasheet/manual PDF page 11
The LiDAR does not include a power switch. When power is supplied to the LiDAR, data will begin to be automatically transmitted.
DC 5±0.2 V
Reported claim
Configuration: TF-UW500; datasheet/manual PDF page 1; Captured manufacturer table; no unprinted tolerance or operating mode inferred.
Power supply | DC 5±0.2 V
NA
Reported claim
Configuration: TF-UW500; datasheet/manual PDF page 2; NA applies to the module; underwater application requires host sealing and optical-window integration, not an IP rating for this bare component.
Protection level | NA
< 1 cm @ 1σ(0.1 ~ 2m)
Reported claim
Configuration: TF-UW500; datasheet/manual PDF page 1; 0.1–2 m; 100 klux, NTU <0.5, 30% target reflectivity, perpendicular incidence, water depth greater than 1 m (note 1).
Repeatability① | < 1 cm @ 1σ(0.1 ~ 2m)
Explicit save required; unsaved changes revert
Reported claim
Configuration: TF-UW500; datasheet/manual PDF page 14
Any change without “save current setting” instruction will not be saved and will restore to original setting.
Peak ≥200 good; 100<Peak<200 repeatability declines; 30≤Peak≤100 poor; Peak<30 outputs 65535
Reported claim
Configuration: TF-UW500; datasheet/manual PDF page 11; Unitless signal-strength indicator and protocol invalid-output sentinel.
Peak: Signal strength. In general, data quality is good when Peak ≥200; When 100<Peak<200, the data repeatability accuracy begins to decrease; Poor repeatability and accuracy when 30 ≤Peak ≤100; When Peak<30, the signal strength is too low for process, LiDAR output 65535.
- 20 ℃~ +70 ℃
Reported claim
Configuration: TF-UW500; datasheet/manual PDF page 2; Captured manufacturer table; no unprinted tolerance or operating mode inferred.
Storage temperature | - 20 ℃~ +70 ℃
Default 115200 (Configurable)
Reported claim
Configuration: TF-UW500; datasheet/manual PDF page 2; Captured manufacturer table; no unprinted tolerance or operating mode inferred.
Baud rate | Default 115200 (Configurable)
8
Reported claim
Configuration: TF-UW500; datasheet/manual PDF page 2; Captured manufacturer table; no unprinted tolerance or operating mode inferred.
Data bit | 8
None
Reported claim
Configuration: TF-UW500; datasheet/manual PDF page 2; Captured manufacturer table; no unprinted tolerance or operating mode inferred.
Parity | None
1
Reported claim
Configuration: TF-UW500; datasheet/manual PDF page 2; Captured manufacturer table; no unprinted tolerance or operating mode inferred.
Stop bit | 1
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