RS485 ultrasonic level sensor, range up to 750 cm with horn, 1 mm resolution, IP67 – Seeed Studio 101991041

Key features

• Range up to 750 cm with the bell-mouth horn, 28 cm blind zone
• 1 mm resolution and ±(1 + S × 0.3%) accuracy thanks to the built-in ranging algorithm
• IP67 waterproof ultrasonic transducer, suited to wet and harsh environments
• Built-in temperature compensation with automatic correction of deviations
• Low power: average current below 10 mA
• RS485 serial output, compatible with SenseCAP LoRaWAN data loggers

Technical specifications

• Accuracy: ±(1 + S × 0.3%)
• Resolution: 1 mm
• Blind zone: 0–28 cm
• Measuring range without horn: 28–450 cm
• Measuring range with horn: 28–750 cm
• Beam angle with horn: approx. 40°
• Supply voltage: 5–12 V
• Average current: less than 10 mA
• Output: RS485
• Protection rating: IP67
• Operating temperature: -15 to +60 °C
• Wiring: red VCC (5–12 V), black GND, yellow RS485 B, white RS485 A

Typical uses

Water level measurement in sewers, manholes and tanks, smart waste bin management, horizontal distance measurement, presence and proximity detection, robot obstacle avoidance.