Most ultrasonic distance sensors arent waterproof which can be a problem if you need your project to withstand the elements outdoors. No need to worry any more!
This is a waterproof & ultrasonic distance sensor with a waterproof sealed emitter, suitable for outdoor applications such as car reversing sensors, security alarms, industrial inspection, etc. What will you make

Features:

1. Small size, easy to use.
2. Plug and play device
3. Low voltage, low power consumption.
4. High accuracy.
5. Strong anti-jamming.
6. Integrated with wire enclosed waterproof probe, suitable for wet, harsh measurement occasions.