3. The module has waterproof and dustproof function, suitable for wet and harsh measurement occasions 4. The module's ultra-low standby power consumption is suitable for battery applications. 1. Using high-quality materials, the quality is guaranteed 2. Typical applications: outdoor robot obstacle avoidance, liquid level, water level measurement, trash can detection, other ranging applications, etc. 5. RCWL-1670 is a waterproof, transceiver split ultrasonic ranging module, Weight: 0.03086471668 pounds, Manufacturer: ximie