I2C Soil moisture sensor from Catnip electronics on Tindie
Peggybuy HW-390 Capacitive Soil Moisture Sensor Module 3.3-5.5V DC with Power Cable | Walmart Canada
10PCS Capacitive Soil Moisture Sensor Module Corrosion Resistant Wide Voltage Wire Analog Capacitive Soil Moisture Sensor V1.2 - Walmart.ca
Analog Capacitive Soil Moisture Sensor v2.0 - Corrosion Resistant Module for Moisture Detection in Garden - Using arduino and Other DIY Kits (3 Pieces), Moisture Meters - Amazon Canada
Sensors | Free Full-Text | Monitoring Soil and Ambient Parameters in the IoT Precision Agriculture Scenario: An Original Modeling Approach Dedicated to Low-Cost Soil Water Content Sensors