Laser Ranging Sensor RS485 (4-400cm)

Laser Ranging Sensor RS485 (4–400cm) provides precise distance detection from 4 cm to 400 cm with measurement accuracy of ±2 cm. This industrial laser distance sensor integrates an RS485 communication interface and supports the Modbus‑RTU protocol, enabling stable connection with industrial controllers, automation equipment, and embedded monitoring systems. A threaded metal housing with optical filtering cover improves durability while minimizing ambient light interference. Wide input voltage from 6 V to 36 V allows flexible deployment across automation platforms, smart infrastructure, and robotic sensing systems where reliable mid‑range distance measurement and robust environmental resistance are required.

Note: The data will be unstable when measuring black objects.

High‑Accuracy Laser Distance Measurement

A compact laser ranging module measures objects across a 4–400 cm detection range while maintaining ±2 cm accuracy. A controlled emitting angle of 39.6° combined with a 36.5° receiving angle enables reliable object detection across typical automation scenarios. Laser‑based ranging technology provides faster response and improved repeatability compared with traditional ultrasonic sensing, supporting applications such as access control monitoring, obstacle detection systems, and automated equipment positioning where stable mid‑range measurement performance is required.

Industrial RS485 Communication with Modbus‑RTU

An integrated industrial RS485 communication chip enables reliable long‑distance data transmission and strong resistance to electrical noise. Modbus‑RTU protocol compatibility simplifies integration into PLC systems, industrial gateways, and automation controllers. Configurable baud rates from 2400 to 921600 (default 115200) allow flexible communication setup across different industrial networks. A built‑in alarm output line can trigger a steady low signal when measured distance drops below a configured threshold, enabling direct connection to alarm systems or automation triggers.

Rugged Metal Housing with IP67 Protection

A threaded metal enclosure with integrated optical protective cover provides strong resistance to vibration, mechanical shock, and environmental interference. The optical structure helps filter ambient light for improved measurement stability in outdoor or industrial environments. IP67 waterproof protection enables dependable operation in dusty or humid installations. Wide input voltage support from 6 V to 36 V further improves adaptability across industrial power systems, robotics platforms, and smart infrastructure installations.

Figure: Dimension

This industrial laser distance sensing unit fits automation monitoring, smart waste bin detection, access control safety systems, security alarm triggers, and robotic obstacle avoidance. Reliable RS485 communication and rugged environmental protection make the sensor suitable for industrial control systems, intelligent infrastructure, and embedded monitoring equipment requiring stable mid‑range distance measurement.