SEN0313 is a A01NYUB waterproof ultrasonic distance sensor (28 to 750cm, UART, IP67). Ultrasonic distance sensor determines the distance to a target by measuring time lapses between the sending and receiving of the ultrasonic pulse. This A01NYUB Waterproof Ultrasonic Sensor features farther monitoring distance, wider detection range and a certain penetration power(smog, dust). The product comes with a removable bell-mouth and the effective measuring distance is 7.5m when the bell-mouth installed. The ultrasonic sensor adopts closed probe of transmitter & receiver, waterproof and dustproof. All the signal processing units are integrated inside the module, so users can directly obtain the distance value through asynchronous serial interface. With 9600bit/s band rate, the sensor can easily communicate with upper-host or other MCU, which greatly shortens the developing cycle for users.