Grove water sensor module for leak and rain detection, 5 V – Seeed Studio 101020018

Key features

• Detects water by measuring conductivity between exposed parallel PCB traces
• Indicates whether the sensor is dry, damp or completely immersed
• Digital water/no water output; on an analog input the amount of water in contact with the traces can be estimated
• Weak 1 MΩ pull-up: the sensor trace stays high until a drop of water shorts it to the ground trace
• Grove 4-pin connector: plug and play connection

Technical specifications

• Operating voltage: 4.75–5.25 V (5 V typical)
• Current: less than 20 mA
• Operating temperature: 10 to 30 °C
• Operating humidity: 10–90% non-condensing
• Output: digital (can also be read on an analog input)
• Connector: Grove 4 pin
• Dimensions: 40 × 20 × 12 mm

Typical uses

Rain detection, liquid leak and flood detection, tank overflow alarms.

Package contents

• 1 Grove - Water Sensor module
• 1 Grove cable