Sensitivity Adjustable Soil Moisture Sensor Hygrometer Detection Module Pack Of 5<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>VCC: .3 V-5V</li><li>PCB size: 32mm * 14mm.</li><li>Interface Description (4-wire)</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41yBu7jNw-L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51J32GGBhQL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51lyZJIDC8L.jpg" noproxy>