DMS604 Long-Range 905 nm dToF Distance Sensor
DMS604 brings long-range point measurement to compact industrial and UAV designs. This 905 nm dToF sensor provides calculated distance data through UART at 50 fps, with a narrow field of view of ≤1.3°. Typical range reaches 35 m outdoors at 100 klux and 58 m indoors with targets from 18% to 88% reflectivity.
Key Highlights
- Track distance along a defined direction with a narrow ≤1.3° field of view.
- Extend outdoor point sensing with a typical 35 m range at 100 klux for 18-88% reflective targets.
- Feed calculated distance data to your host through UART at 50 fps.
- Fit the sensing assembly into compact equipment with a 40 × 10 × 7.7 mm module and a single 5 V supply.
Overview
DMS604 combines a dToF SoC, SPAD receiver, 905 nm VCSEL, optics and onboard processing in one module. The host receives calculated distance data, allowing an MCU or SoC to use point measurements in its application logic.
Its narrow field of view suits installations that need distance along a particular direction. Indoor designs can use the typical 58 m range as a selection reference for targets with 18-88% reflectivity. For bright outdoor installations, the typical range is 35 m at 100 klux under the same reflectivity condition.
- Outdoor Range
- 35 m at 100 klux
- Indoor Range
- 58 m
- Frame Rate
- 50 fps
- Field of View
- ≤1.3°
Applications
Industrial distance and position sensing
Use the 50 fps distance stream as an input for continuous point measurement and position feedback. Match the sensor’s measurement direction to the target and mounting geometry. The compact module and four-pin connection suit equipment with limited space for sensing hardware.
UAV ground and obstacle ranging
DMS604 provides directional distance input for UAV altitude and obstacle-sensing designs. Its integrated optics and processing reduce the number of separate sensing components to accommodate in the aircraft. Surface reflectivity, flight attitude and lighting are useful starting points when choosing the installation and evaluation scenes.
Technical specifications
Ranging and module parameters
| Parameter | Specification | Condition |
|---|---|---|
| Outdoor range | 35 m typical | 100 klux; 18-88% target reflectivity |
| Indoor range | 58 m typical | 18-88% target reflectivity |
| Frame rate | 50 fps | Calculated distance output |
| Field of view | ≤1.3° | |
| Emitter wavelength | 905 nm | |
| Interface | UART | |
| Supply | 5 V | |
| Module dimensions | 40 × 10 × 7.7 mm | |
| Operating temperature | -20 to 85 °C | |
| Storage temperature | -30 to 70 °C |
Electrical and optical integration
Host connection
Connect the module to a 5 V supply and the host UART using the following pin assignment. Communication uses CRC-16/MODBUS framing. The UART data path provides calculated distance and supports ranging information such as main-peak amplitude and signal-to-noise ratio.
| Pin | Port | Function |
|---|---|---|
| 1 | 5V | 5 V power input |
| 2 | UART_TX | Module communication output |
| 3 | UART_RX | Module communication input |
| 4 | GND | Ground |
Protective window
For an enclosure window, use more than 95% transmittance at 905 nm and less than 5% haze. Keep both surfaces smooth and parallel, with the window mounted close to the module front surface to limit optical crosstalk. A thickness below 0.8 mm is preferred. Keep the window flat and aligned with the module.
Safety and compliance
DMS604 is designed to meet Class 1 laser limits under IEC 60825-1:2014 when used in the recommended configuration and specified operating conditions. Preserve the specified laser output and optical configuration. Increasing output power, focusing the beam or using controls outside the specification can create hazardous radiation exposure.
DMS604 complies with RoHS requirements.
FAQs
What outdoor and indoor ranges does DMS604 offer?
The typical outdoor range is 35 m at 100 klux, and the typical indoor range is 58 m. Both specifications use targets with 18-88% reflectivity.
How does DMS604 connect to the host?
The module uses UART for calculated distance output at 50 fps. Its four-pin connection includes 5 V, UART_TX, UART_RX and ground.
What does the narrow field of view help measure?
The ≤1.3° field of view supports point ranging along a defined direction. It is useful when the application needs distance to a particular target region, such as an industrial position reference or a ground-facing UAV measurement.
Can DMS604 sit behind a protective window?
Yes. Use a flat, parallel window with more than 95% transmittance at 905 nm and less than 5% haze. A thickness below 0.8 mm is preferred, with close placement against the module front surface.
Discuss your distance-sensing design
Share your working distance, target surface, lighting and mounting space with us. We can help you select a DMS604 evaluation setup and plan the host connection and protective window for your equipment.
Need help integrating DMS604?
Get expert guidance from our sensing engineers on product selection, evaluation samples, system integration, and technical requirements for your application.
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