![TFW-G-0037](https://akadako.com/grove/assets/TFW-G-0037/picture.png)
Description
Grove - Water Sensor can detect the presence of water using exposed PCB traces. It indicates whether the sensor is dry, damp or completely immersed in water by measuring conductivity. The sensor traces have a weak pull-up resistor of 1 MΩ. The resistor will pull the sensor trace value high until a drop of water shorts the sensor trace to the grounded trace.
![](https://akadako.com/grove/assets/TFW-G-0037/program_en.png)
Program:https://akadako.com/grove/assets/TFW-G-0037/program.sb3
How to use SB3 file
After downloading sample SB3 file on this page, go to Xcratch or Stretch3. Click on "Load from your computer" and select the file you downloaded to open it. After opening the file, connect AkaDako to your PC and check the operation of the sensors and actuators.
![How to use sb3 file](https://akadako.com/wp-content/themes/akadako/img/how-to-sb3_en.png)