Amazon.com.au:Customer reviews: Soil pH Meter, 3-in-1 Soil Test Kit For Moisture, Light & pH, A Must Have For Home And Garden, Lawn, Farm, Plants, Herbs & Gardening Tools, Indoor/Outdoors Plant Care Soil Tester (No Battery Needed) by Eisonlife
The 3-in-1 soil tester is exactly what they say it is. So far (3 days in) it works in every respect. Luckily though, I didn't need to read the factory manual because it was a little light-on. I bought 2 units; one for the wife, and I'm hopeful it will shutdown all future discussion about whether the gardens and pots have enough water. In future I'll be asking; "Really darling? You think it needs more water? What does the soil tester think?"