Gravity: URM09 Ultrasonic Distance Sensor (2～500cm, I2C) Category_Electronics/Connectors so a beginner's knowledge of

so a beginner's knowledge of soldering will be required

It’s suitable for detecting formaldehyde

With the Arduino shield footprint

four separate diodes sensitive to different directions

It requires no drivers (when used with most operating systems)

Gravity: URM09 Ultrasonic Distance Sensor (2～500cm, I2C) Category_Electronics/Connectors so a beginner's knowledge ofDFRobot URM09 is an ultrasonic sensor specifically designed for fast ranging and obstacle avoidance application. Its measuring frequency can reach up to 50Hz. The sensor adopts built in temperature compensation and I2C communication. There are three measurement ranges designed for programs to select: 150cm, 300cm and 500cm. Please note that shorter range will provide shorter ranging cycle and lower sensitivity. You may need to set it according to your