https://www.adafruit.com/product/1137
Maxbotix Weather-Resistant Ultrasonic Rangefinder [MB7092 XL-MaxSonar-WRMA1] : Adafruit Industries,...
Take your sonar outside - great for all-weather robots! The XL-MaxSonar-WRMA1 ignores smaller targets and only reports the range to target with the largest...
weather resistantultrasonic rangefindermaxbotix