DYP-A02YYMW-V2.0 Ultrasonic Distance Sensor 3–450cm - PWM Output, IP67 PVC Housing

The sensor requires a DC supply voltage between 3.3V and 5.0V for standard operation. It draws a low operating current of ≤8mA. Note that the RS485 output variant of this series supports a wider voltage range of 5.0V to 24.0V.

The PWM output provides a pulse width proportional to the measured distance. Connect the sensor's signal pin to a digital input pin on your Arduino or other microcontroller. You can use the `pulseIn()` function or a hardware timer input capture to measure the pulse width and convert it to a distance value using the provided datasheet formula.

Yes, the sensor's PVC housing is rated IP67, meaning it is dust-tight and can withstand temporary immersion in water up to 1 meter for 30 minutes. Combined with its operating temperature range of -15°C to +60°C, it is well-suited for many outdoor and harsh environment applications.

The sensor has a minimum measurable distance, or dead band, of 3 cm. Objects closer than 3 cm may not be detected accurately. The maximum range is 450 cm under ideal conditions, though effective range can be reduced by target material, angle, and environmental noise.

The sensor features real-time background automatic calibration firmware, which continuously adapts to environmental conditions like temperature and acoustic noise. For most applications, no manual calibration is required. For critical precision applications, you can apply software offset corrections based on known reference distances.