Description Description: The Unit Ultrasonic-I2C is an ultrasonic distance measurement sensor with an I2C communication interface. The hardware utilizes the RCWL-9620 ultrasonic distance measurement chip paired with a 16 mm probe, enabling precise distance measurement within a range of 2 cm to 450 cm (with an accuracy of 2%). As an I2C slave device, the sensor can share bus resources with other I2C devices, maximizing IO resource savings. It is ideal for applications such as robot obstacle avoidance and liquid level detection. Note: When measuring distances 3.5 meters, there may be a slight delay in the distance measurement response. Features: RCWL-9620 I2C communication interface (addr: 0x57) Range: 2cm-450cm Protective cover for stable circuit operation Built-in temperature compensation to reduce probe temperature drift Supports UIFlow graphical programming Applications: Robot obstacle avoidance Liquid level measurement Posture detection (The product printed words depending on the batch, but this does not affect use) Color: As Shown Material: plastic Package Contents: 1 x Unit Ultrasonic-I2C 1 x HY2.0-4P Grove cable (20cm) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.