The S1-400 is a compact short-range 1D Time-of-Flight (ToF) laser distance sensor module developed for embedded distance detection and proximity sensing applications. It is designed to deliver fast, stable, and reliable distance measurements in real-world environments where ambient light, dust, and electrical noise are present.

Using a 940 nm invisible infrared laser, the S1-400 meets Class 1 eye-safety requirements, allowing safe continuous operation in human-interactive scenarios such as service robots, smart appliances, and access-controlled systems. Its high-speed response of up to 30 Hz enables accurate detection of moving objects, making it well suited for AGV obstacle avoidance and dynamic proximity monitoring.

The sensor integrates the transmitter and receiver optics into a highly compact PCB module, enabling easy hidden installation inside space-constrained devices. Advanced optical filtering and calibration algorithms suppress sunlight interference and automatically compensate for dust or contamination on the optical window, reducing false readings and maintenance requirements.

With low power consumption below 0.2 W and a flexible 3.3–5 V power supply, the S1-400 can be easily integrated into battery-powered or energy-sensitive systems. The TTL UART output interface, combined with Modbus RTU / ASCII protocols, ensures straightforward communication with MCUs, controllers, and embedded platforms.

Thanks to its robust design, wide temperature range, and strong environmental adaptability, the S1-400 is widely used in AGV and robot obstacle detection, human presence sensing, occupancy monitoring, projector auto-focus triggering, smart waste bin level detection, and general industrial distance and position sensing applications.

The S1-400 is available for OEM and ODM customization, including parameter configuration, firmware tuning, and mechanical integration support, making it a flexible solution for high-volume embedded sensing projects.

Typical Applications

• AGV Obstacle Avoidance Nodes

• Service & Vacuum Robot Front Sensors

• Human Presence & Proximity Detection

• Face Recognition Wake-Up Trigger

• Occupancy Detection Systems

• Projector Auto-Focus Trigger

• Smart Waste Bin Fill-Level Detection

• Industrial Distance & Position Detection

Integration & Customization

S1-400 supports OEM / ODM customization, including:

• Measurement range tuning

• Output configuration

• Mechanical integration support

• Batch firmware parameter configuration

Please contact MyAntenna RF for customization feasibility and lead time.

Why Choose S1-400

• Designed specifically for short-range embedded sensing

• Optimized for real-world environments, not laboratory conditions

• Proven performance in robotics, smart devices, and industrial monitoring

• Backed by MyAntenna RF’s optical sensing and manufacturing experience