Capacitive Soil Moisture Sensor Moisture Meter Plant Probe for Arduino Features: This capacitive soil moisture sensor features no exposed plating and uses capacitive sensing to detect soil moisture. The result is a much more robust sensor without the usual corrosion worries. The sensor has a built-in voltage regulator that supports 3.3V, meaning it can work with a 3.3V development board as well as 5V Bring you watering system to another level and give your plants that well deserved attention. With this small yet powerful device expand your home automation to another level using ESPHome, Tasmota or any of the programming language. Perfect for your Internet of Things projects. Specification: Sensor type: Analogue Operating voltage: 3.3VDC 5 VDC Output voltage: 0-3.0 VDC Interface: PH2.54 3-pin Package includes: 1x Capacitive soil moisture sensor 1x 3-Wire interface cable