Rather than testing these qualities separately, the Sonkir MS02 Soil pH Tester reads all three at the same time. The tester is equipped with three sensors: The light sensor is located at the top, while the pH and water sensors are located on the probes. When the probes are inserted in 3 to 4 inches of soil, all three sensors are able to provide an accurate reading, according to the brand. Customers frequently use the tester to make sure indoor plants are getting enough sunlight. And in outdoor gardens, the meter makes it easy to check the pH level of the soil, so you can figure out if you need to adjust it to support the types of plants you want to grow. Simply wipe off the probes between uses to ensure each reading is accurate. “Go for this tester,” said another reviewer. “Before I made this purchase, I looked up online to see which brand has the best soil pH meter, and I found a page that recommends Sonkir soil pH meter. The price is very reasonable for its high quality.” Keep your garden at its healthiest with the Sonkir MS02 Soil pH Tester. When you apply the on-page coupon available right now, the price drops to $10.