The M5Stack Unit I2C is an I2C interface ultrasonic distance sensor. This allows for easy I2C integration and multi-sensor operation using a single BUS, to save I/O resources. The module features an RCWL-9620 ultrasonic distance measurement chip with a 16mm probe, which the ranging accuracy can reach 2cm-450cm (accuracy up to ±2%). It is ideal to apply in robotics obstacle avoidance, fluid level detection, and other applications that require you to perform measurements. Features * RCWL-9620 Chip * I2C communication interface (addr: 0x57) * Measuring range: 2cm-450cm * Protective housing * Built-in temperature compensation, reduce the temperature drift * Support UIFlow platform Package Contents * 1x Unit UNIT SONIC I2C * 1x HY2.0-4P cable (20cm) Specifications Specifications Parameters Ultrasonic Ranging Single Chip RCWL-9620 Range 2cm-450cm Probe Specifications 16mm Receiving/Transmitting Frequency 40KHz Receiving sensitivity -65dB Pointing angle 60° Measurement accuracy ±2% Working current 2mA Net weight 10g Gross weight 25g Product size 56 * 24 * 15mm Packing size 76 * 47 * 29mm Resources * Main documentation page Video https://elecena.pl/product/22725062/m5stack-ultrasonic-distance-unit-i2c-rcwl-9620 2023-03-07 https://elecena.pl/product/22725062/m5stack-ultrasonic-distance-unit-i2c-rcwl-9620 2023-12-27 https://elecena.pl/product/22725062/m5stack-ultrasonic-distance-unit-i2c-rcwl-9620 2024-09-19 https://elecena.pl/product/22725062/m5stack-ultrasonic-distance-unit-i2c-rcwl-9620 2024-11-29 https://elecena.pl/product/22725062/m5stack-ultrasonic-distance-unit-i2c-rcwl-9620 2024-11-30 https://elecena.pl/product/22725062/m5stack-ultrasonic-distance-unit-i2c-rcwl-9620 2025-08-05 https://elecena.pl/product/22725062/m5stack-ultrasonic-distance-unit-i2c-rcwl-9620 2025-11-28 https://elecena.pl/product/22725062/m5stack-ultrasonic-distance-unit-i2c-rcwl-9620 2025-11-29