Hi-link HLK-LD8001 79Ghz Liquid Level Detection Radar Sensor Kit

The Hi-Link HLK-LD8001 is a 79GHz millimeter-wave radar sensor module designed for non-contact liquid and material level detection. Using FMCW radar technology, it delivers high-accuracy distance and level measurement up to 15m, ideal for industrial and environmental monitoring.

Key Features & Highlights - 

From product pages and manufacturer announcements:

• Radar frequency: approximately 76–81 GHz (around 79 GHz) RF transceiver integrated design. 
• FMCW modulation / continuous wave radar method (measuring frequency sweep) to compute distance. 
• High accuracy: typical error ±5 mm. 
• Non‑contact measurement, suitable for liquids, materials, in varied environments (not strongly affected by temperature, humidity, dust, ambient light) as claimed. 
• Wide beam / broad detection angle: antenna −3 dB beam width roughly 100° horizontally and 80° in tilt (vertical) direction. 
• Interfaces: supports standard communication protocols like UART, SPI, I²C. 
• Firmware upgradable via UART. 
• Compact footprint: module in circular / round form (radius ~19.5 mm) or small square / round design. 
• External lens support: lens or cover can be added / changed to adjust the beam angle. 
• Long measurement range: up to ~15 m (depending on target, reflectivity, environment).