Waterproof Capacitive Soil Moisture Sensor (DFRobot)

The DFRobot Waterproof Capacitive Soil Moisture Sensor measures how wet or dry the soil is, so you can water plants only when they actually need it. Because it works on the capacitive principle instead of exposed metal probes, it avoids the corrosion problems of cheaper resistive sensors and stays reliable over the long term. It suits home gardeners, hobbyists, hydroponics enthusiasts, and anyone building a smart irrigation or plant-monitoring project around Arduino, ESP32, Raspberry Pi, or similar boards.

Key features

• Capacitive sensing for stable, corrosion-resistant readings
• Waterproof design suited to damp soil and outdoor conditions
• Compatible with common microcontroller and maker platforms
• Simple analog output that is easy to read and calibrate
• Compact probe that inserts easily into pots, beds, and planters

Typical uses

• Automated drip or pump irrigation triggered by soil dryness
• Houseplant and balcony-garden moisture monitoring
• Greenhouse, nursery, and hydroponics experiments
• School, university, and DIY electronics projects

How to choose / tips

Insert the probe fully into the root zone for a representative reading, and calibrate dry-versus-wet values once in your own soil. For outdoor or long-term setups, a waterproof capacitive sensor like this lasts far longer than bare-metal resistive types. Check your board's input voltage before wiring.

Why tna W rna

At tna W rna we focus on quality components and reliable sourcing, with fast delivery across Egypt and cash on delivery for your convenience.