MaxBotix MB7051 XL-MaxSonar-WRML Weather-Resistant Ultrasonic Sensor - IP67 PVC Housing

The MB7051 provides three simultaneous output formats: a variable-width pulse (on the PW pin), an analog voltage (on the AN pin) that scales linearly with distance, and RS232 serial data (on the TX pin). You select the output by reading from the corresponding pin on the 6-pin header. All outputs are active concurrently, allowing your microcontroller or PLC to use the most convenient interface.

The IP67 rating ensures the sensor is completely protected against dust ingress and can withstand temporary immersion in water up to 1 meter for 30 minutes. The rugged PVC housing is not only durable against UV exposure and physical impacts but is also threaded to mate with standard 3/4-inch PVC electrical conduit fittings. This allows for secure, sealed mounting directly into pipe-based outdoor frames or enclosures.

Real-time automatic calibration continuously adjusts the sensor's internal parameters to compensate for changes in supply voltage, ambient humidity, and acoustic background noise, ensuring measurement accuracy remains stable over time and environmental shifts. The additional stability filter is a software algorithm that analyzes the return signal pattern, rejecting occasional spurious echoes or electrical noise that could cause anomalous distance readings, thereby improving overall data reliability.

Yes, the MB7051 has a wide operating voltage range of 3.0V to 5.5V DC. This makes it fully compatible with 3.3V logic systems like the Raspberry Pi, ESP32, or STM32. When powered at 3.3V, the analog voltage and serial output signals will be referenced to that same voltage, ensuring safe and direct communication without requiring level shifters.