Distance sensors
DFRobot Gravity URM09 I2C Ultrasonic Sensor (2-500 cm)
Model SEN0304
Ultrasonic distance sensor with I2C interface and temperature compensation.

DFRobot · Distance sensors
Model: SEN0307
Ultrasonic distance sensor with analog output.
Distance sensors
Model SEN0304
Ultrasonic distance sensor with I2C interface and temperature compensation.
Distance sensors
Model SEN0311
Water-resistant ultrasonic sensor with UART output for level and distance.
Distance sensors
Model SEN0313
Long-range waterproof ultrasonic sensor with UART output.
Distance sensors
Model SEN0208
Ultrasonic distance sensor with a sealed probe for humid environments.
Distance sensors
Model SEN0245
Time-of-flight laser sensor for accurate distance measurement.
Distance sensors
Model SEN0628
Time-of-flight distance sensor with 64 measurement zones, I2C/UART interface.
Distance sensors
Model SEN0019
Infrared proximity switch with adjustable detection distance.
Arduino boards
Model DFR0216
Development board based on the ATmega328P, fully compatible with Arduino UNO R3. Ideal for learning programming and electronics in classrooms and labs.